./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/bor1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/bor1.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 dc029b09d1398b404e1aee83359480f2bc7a4040f694547fb82d365d81b9786a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:50:41,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:50:41,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:50:41,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:50:41,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:50:41,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:50:41,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:50:41,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:50:41,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:50:41,345 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:50:41,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:50:41,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:50:41,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:50:41,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:50:41,349 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:50:41,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:50:41,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:50:41,350 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:50:41,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:50:41,350 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:50:41,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:50:41,353 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:50:41,353 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:50:41,353 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:50:41,354 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:50:41,354 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:50:41,354 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:50:41,354 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:50:41,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:50:41,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:50:41,355 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:50:41,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:50:41,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:50:41,356 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:50:41,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:50:41,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:50:41,358 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:50:41,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:50:41,358 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:50:41,359 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:50:41,359 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:50:41,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:50:41,360 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc029b09d1398b404e1aee83359480f2bc7a4040f694547fb82d365d81b9786a [2024-11-21 20:50:41,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:50:41,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:50:41,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:50:41,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:50:41,637 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:50:41,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bor1.i [2024-11-21 20:50:43,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:50:43,185 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:50:43,186 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bor1.i [2024-11-21 20:50:43,193 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a45046ed1/85de9d9e30f4488cab602d71dd37cbca/FLAG04ed51407 [2024-11-21 20:50:43,211 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a45046ed1/85de9d9e30f4488cab602d71dd37cbca [2024-11-21 20:50:43,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:50:43,216 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:50:43,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:50:43,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:50:43,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:50:43,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9d4506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43, skipping insertion in model container [2024-11-21 20:50:43,229 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,253 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:50:43,479 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-crafted/bor1.i[1285,1298] [2024-11-21 20:50:43,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:50:43,490 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:50:43,508 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-crafted/bor1.i[1285,1298] [2024-11-21 20:50:43,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:50:43,522 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:50:43,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43 WrapperNode [2024-11-21 20:50:43,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:50:43,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:50:43,524 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:50:43,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:50:43,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,555 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 76 [2024-11-21 20:50:43,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:50:43,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:50:43,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:50:43,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:50:43,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,569 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,586 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 7, 11]. 55 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0]. The 5 writes are split as follows [0, 0, 5]. [2024-11-21 20:50:43,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:50:43,600 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:50:43,600 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:50:43,600 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:50:43,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (1/1) ... [2024-11-21 20:50:43,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:50:43,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:43,639 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) [2024-11-21 20:50:43,642 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 [2024-11-21 20:50:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:50:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2024-11-21 20:50:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2024-11-21 20:50:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:50:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:50:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 20:50:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:50:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:50:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:50:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 20:50:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:50:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:50:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:50:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:50:43,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 20:50:43,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:50:43,782 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:50:43,784 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:50:43,964 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-21 20:50:43,965 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:50:43,975 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:50:43,975 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-21 20:50:43,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:50:43 BoogieIcfgContainer [2024-11-21 20:50:43,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:50:43,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:50:43,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:50:43,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:50:43,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:50:43" (1/3) ... [2024-11-21 20:50:43,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76222317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:50:43, skipping insertion in model container [2024-11-21 20:50:43,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:50:43" (2/3) ... [2024-11-21 20:50:43,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76222317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:50:43, skipping insertion in model container [2024-11-21 20:50:43,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:50:43" (3/3) ... [2024-11-21 20:50:43,985 INFO L112 eAbstractionObserver]: Analyzing ICFG bor1.i [2024-11-21 20:50:43,999 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:50:44,000 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:50:44,048 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:50:44,055 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;@259908aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:50:44,055 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:50:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-21 20:50:44,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:44,066 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:44,067 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:44,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:44,071 INFO L85 PathProgramCache]: Analyzing trace with hash 571232979, now seen corresponding path program 1 times [2024-11-21 20:50:44,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:44,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986086802] [2024-11-21 20:50:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:50:44,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:50:44,371 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-21 20:50:44,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:44,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986086802] [2024-11-21 20:50:44,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986086802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:50:44,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:50:44,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:50:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656197953] [2024-11-21 20:50:44,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:50:44,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:50:44,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:50:44,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:50:44,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:50:44,411 INFO L87 Difference]: Start difference. First operand has 31 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-21 20:50:44,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:50:44,453 INFO L93 Difference]: Finished difference Result 60 states and 83 transitions. [2024-11-21 20:50:44,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:50:44,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-21 20:50:44,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:50:44,471 INFO L225 Difference]: With dead ends: 60 [2024-11-21 20:50:44,471 INFO L226 Difference]: Without dead ends: 29 [2024-11-21 20:50:44,474 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 [2024-11-21 20:50:44,480 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:50:44,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:50:44,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-21 20:50:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-21 20:50:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-21 20:50:44,529 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 29 [2024-11-21 20:50:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:50:44,531 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-21 20:50:44,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-21 20:50:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-21 20:50:44,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-21 20:50:44,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:44,534 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:44,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:50:44,535 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:44,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:44,536 INFO L85 PathProgramCache]: Analyzing trace with hash 572560753, now seen corresponding path program 1 times [2024-11-21 20:50:44,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:44,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11511021] [2024-11-21 20:50:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:50:44,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:50:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-21 20:50:44,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:44,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11511021] [2024-11-21 20:50:44,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11511021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:50:44,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751826398] [2024-11-21 20:50:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:50:44,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:44,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:44,719 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) [2024-11-21 20:50:44,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 20:50:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:50:44,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 20:50:44,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:50:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-21 20:50:44,874 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 20:50:44,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751826398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:50:44,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 20:50:44,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 20:50:44,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283192492] [2024-11-21 20:50:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:50:44,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:50:44,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:50:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:50:44,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:50:44,883 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-21 20:50:44,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:50:44,915 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2024-11-21 20:50:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:50:44,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-21 20:50:44,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:50:44,917 INFO L225 Difference]: With dead ends: 55 [2024-11-21 20:50:44,917 INFO L226 Difference]: Without dead ends: 34 [2024-11-21 20:50:44,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:50:44,920 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:50:44,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:50:44,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-21 20:50:44,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2024-11-21 20:50:44,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-21 20:50:44,930 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 31 [2024-11-21 20:50:44,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:50:44,931 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-21 20:50:44,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-21 20:50:44,931 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-21 20:50:44,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-21 20:50:44,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:44,934 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:44,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 20:50:45,135 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 [2024-11-21 20:50:45,136 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:45,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:45,137 INFO L85 PathProgramCache]: Analyzing trace with hash -205733940, now seen corresponding path program 1 times [2024-11-21 20:50:45,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:45,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484268995] [2024-11-21 20:50:45,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:50:45,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:50:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-21 20:50:45,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:45,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484268995] [2024-11-21 20:50:45,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484268995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:50:45,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762809889] [2024-11-21 20:50:45,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:50:45,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:45,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:45,268 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) [2024-11-21 20:50:45,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 20:50:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:50:45,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 20:50:45,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:50:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-21 20:50:45,381 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 20:50:45,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762809889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:50:45,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 20:50:45,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 20:50:45,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716958504] [2024-11-21 20:50:45,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:50:45,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:50:45,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:50:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:50:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:50:45,386 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-21 20:50:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:50:45,406 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2024-11-21 20:50:45,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:50:45,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-11-21 20:50:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:50:45,408 INFO L225 Difference]: With dead ends: 48 [2024-11-21 20:50:45,409 INFO L226 Difference]: Without dead ends: 31 [2024-11-21 20:50:45,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:50:45,410 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:50:45,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:50:45,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-21 20:50:45,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-21 20:50:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-21 20:50:45,420 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 43 [2024-11-21 20:50:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:50:45,422 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-21 20:50:45,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-21 20:50:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-21 20:50:45,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-21 20:50:45,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:45,424 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:45,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 20:50:45,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-21 20:50:45,625 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:45,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:45,626 INFO L85 PathProgramCache]: Analyzing trace with hash -346372054, now seen corresponding path program 1 times [2024-11-21 20:50:45,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:45,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030410945] [2024-11-21 20:50:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:50:45,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:50:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-21 20:50:45,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:45,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030410945] [2024-11-21 20:50:45,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030410945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:50:45,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273058252] [2024-11-21 20:50:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:50:45,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:45,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:45,709 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) [2024-11-21 20:50:45,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 20:50:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:50:45,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:50:45,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:50:45,834 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-21 20:50:45,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:50:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-21 20:50:45,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273058252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:50:45,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:50:45,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 20:50:45,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289704692] [2024-11-21 20:50:45,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:50:45,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 20:50:45,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:50:45,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 20:50:45,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:50:45,890 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 20:50:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:50:45,928 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2024-11-21 20:50:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:50:45,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2024-11-21 20:50:45,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:50:45,929 INFO L225 Difference]: With dead ends: 61 [2024-11-21 20:50:45,930 INFO L226 Difference]: Without dead ends: 36 [2024-11-21 20:50:45,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:50:45,931 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:50:45,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 87 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:50:45,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-21 20:50:45,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-21 20:50:45,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-21 20:50:45,941 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 45 [2024-11-21 20:50:45,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:50:45,942 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-21 20:50:45,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 20:50:45,942 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-21 20:50:45,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-21 20:50:45,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:45,943 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:45,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 20:50:46,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:46,144 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:46,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:46,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1162285692, now seen corresponding path program 2 times [2024-11-21 20:50:46,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:46,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815219812] [2024-11-21 20:50:46,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:50:46,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:46,187 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:50:46,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-21 20:50:46,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:46,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815219812] [2024-11-21 20:50:46,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815219812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:50:46,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138818728] [2024-11-21 20:50:46,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:50:46,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:46,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:46,324 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) [2024-11-21 20:50:46,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 20:50:46,416 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:50:46,416 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:46,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 20:50:46,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:50:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-21 20:50:46,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:50:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-21 20:50:46,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138818728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:50:46,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:50:46,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-21 20:50:46,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998371611] [2024-11-21 20:50:46,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:50:46,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-21 20:50:46,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:50:46,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-21 20:50:46,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-21 20:50:46,602 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 20:50:46,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:50:46,686 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2024-11-21 20:50:46,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-21 20:50:46,690 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2024-11-21 20:50:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:50:46,692 INFO L225 Difference]: With dead ends: 84 [2024-11-21 20:50:46,693 INFO L226 Difference]: Without dead ends: 59 [2024-11-21 20:50:46,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-21 20:50:46,696 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:50:46,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 192 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:50:46,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-21 20:50:46,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2024-11-21 20:50:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-21 20:50:46,709 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 51 [2024-11-21 20:50:46,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:50:46,712 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-21 20:50:46,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 20:50:46,712 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-21 20:50:46,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-21 20:50:46,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:46,713 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:46,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-21 20:50:46,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:46,920 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:46,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:46,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1972636781, now seen corresponding path program 3 times [2024-11-21 20:50:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:46,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960562612] [2024-11-21 20:50:46,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:50:46,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:46,965 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:50:46,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-21 20:50:47,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:47,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960562612] [2024-11-21 20:50:47,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960562612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:50:47,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900169632] [2024-11-21 20:50:47,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:50:47,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:47,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:47,048 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) [2024-11-21 20:50:47,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 20:50:47,140 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:50:47,140 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:47,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:50:47,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:50:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-21 20:50:47,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:50:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-21 20:50:47,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900169632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:50:47,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:50:47,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 20:50:47,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584655963] [2024-11-21 20:50:47,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:50:47,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 20:50:47,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:50:47,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 20:50:47,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:50:47,200 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-21 20:50:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:50:47,223 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2024-11-21 20:50:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:50:47,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2024-11-21 20:50:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:50:47,225 INFO L225 Difference]: With dead ends: 83 [2024-11-21 20:50:47,225 INFO L226 Difference]: Without dead ends: 60 [2024-11-21 20:50:47,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:50:47,226 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:50:47,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 85 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:50:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-21 20:50:47,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-21 20:50:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-21 20:50:47,236 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 75 [2024-11-21 20:50:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:50:47,236 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-21 20:50:47,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-21 20:50:47,237 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-21 20:50:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-21 20:50:47,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:47,238 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:47,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-21 20:50:47,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:47,443 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:47,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:47,443 INFO L85 PathProgramCache]: Analyzing trace with hash -596768723, now seen corresponding path program 4 times [2024-11-21 20:50:47,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:47,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370300207] [2024-11-21 20:50:47,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:50:47,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:47,472 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:50:47,472 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-21 20:50:47,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370300207] [2024-11-21 20:50:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370300207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:50:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135720027] [2024-11-21 20:50:47,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:50:47,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:47,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:47,565 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) [2024-11-21 20:50:47,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 20:50:47,680 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:50:47,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:47,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 20:50:47,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:50:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-21 20:50:47,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:50:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-21 20:50:47,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135720027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:50:47,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:50:47,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-21 20:50:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767323580] [2024-11-21 20:50:47,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:50:47,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-21 20:50:47,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:50:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-21 20:50:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-21 20:50:47,766 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-21 20:50:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:50:47,796 INFO L93 Difference]: Finished difference Result 119 states and 148 transitions. [2024-11-21 20:50:47,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-21 20:50:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 81 [2024-11-21 20:50:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:50:47,798 INFO L225 Difference]: With dead ends: 119 [2024-11-21 20:50:47,798 INFO L226 Difference]: Without dead ends: 84 [2024-11-21 20:50:47,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-21 20:50:47,800 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 46 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:50:47,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 130 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:50:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-21 20:50:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-21 20:50:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 79 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2024-11-21 20:50:47,813 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 81 [2024-11-21 20:50:47,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:50:47,814 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2024-11-21 20:50:47,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-21 20:50:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2024-11-21 20:50:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-21 20:50:47,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:47,819 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:47,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 20:50:48,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:48,020 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:48,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:48,021 INFO L85 PathProgramCache]: Analyzing trace with hash 632882841, now seen corresponding path program 5 times [2024-11-21 20:50:48,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:48,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452251209] [2024-11-21 20:50:48,021 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:50:48,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:48,126 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-21 20:50:48,126 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:48,320 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 160 proven. 226 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-11-21 20:50:48,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:48,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452251209] [2024-11-21 20:50:48,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452251209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:50:48,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976362558] [2024-11-21 20:50:48,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:50:48,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:48,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:48,323 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) [2024-11-21 20:50:48,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 20:50:49,267 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-21 20:50:49,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:49,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 20:50:49,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:50:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2024-11-21 20:50:49,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:50:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-11-21 20:50:49,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976362558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:50:49,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:50:49,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-21 20:50:49,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084794376] [2024-11-21 20:50:49,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:50:49,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-21 20:50:49,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:50:49,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-21 20:50:49,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-21 20:50:49,451 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 20:50:49,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:50:49,505 INFO L93 Difference]: Finished difference Result 191 states and 248 transitions. [2024-11-21 20:50:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-21 20:50:49,507 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2024-11-21 20:50:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:50:49,509 INFO L225 Difference]: With dead ends: 191 [2024-11-21 20:50:49,510 INFO L226 Difference]: Without dead ends: 132 [2024-11-21 20:50:49,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-21 20:50:49,512 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 130 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:50:49,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 178 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:50:49,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-21 20:50:49,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-21 20:50:49,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.2440944881889764) internal successors, (158), 127 states have internal predecessors, (158), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 164 transitions. [2024-11-21 20:50:49,533 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 164 transitions. Word has length 129 [2024-11-21 20:50:49,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:50:49,533 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 164 transitions. [2024-11-21 20:50:49,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 20:50:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 164 transitions. [2024-11-21 20:50:49,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-21 20:50:49,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:49,537 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:49,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-21 20:50:49,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:49,739 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:49,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:49,739 INFO L85 PathProgramCache]: Analyzing trace with hash 933882737, now seen corresponding path program 6 times [2024-11-21 20:50:49,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:49,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501993318] [2024-11-21 20:50:49,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:50:49,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:49,851 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-21 20:50:49,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-21 20:50:49,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:49,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501993318] [2024-11-21 20:50:49,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501993318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:50:49,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176302484] [2024-11-21 20:50:49,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:50:49,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:49,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:49,982 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:50:49,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 20:50:50,144 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-21 20:50:50,144 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:50,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-21 20:50:50,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:50:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 1634 proven. 16 refuted. 0 times theorem prover too weak. 2051 trivial. 0 not checked. [2024-11-21 20:50:50,276 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:50:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-21 20:50:50,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176302484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:50:50,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:50:50,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 18 [2024-11-21 20:50:50,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975624521] [2024-11-21 20:50:50,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:50:50,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-21 20:50:50,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:50:50,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-21 20:50:50,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=174, Unknown=0, NotChecked=0, Total=306 [2024-11-21 20:50:50,398 INFO L87 Difference]: Start difference. First operand 132 states and 164 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-21 20:50:50,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:50:50,523 INFO L93 Difference]: Finished difference Result 239 states and 305 transitions. [2024-11-21 20:50:50,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-21 20:50:50,523 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 225 [2024-11-21 20:50:50,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:50:50,526 INFO L225 Difference]: With dead ends: 239 [2024-11-21 20:50:50,528 INFO L226 Difference]: Without dead ends: 144 [2024-11-21 20:50:50,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=220, Invalid=332, Unknown=0, NotChecked=0, Total=552 [2024-11-21 20:50:50,529 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 20 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:50:50,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 140 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:50:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-21 20:50:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-21 20:50:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.223021582733813) internal successors, (170), 139 states have internal predecessors, (170), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:50,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 176 transitions. [2024-11-21 20:50:50,550 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 176 transitions. Word has length 225 [2024-11-21 20:50:50,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:50:50,551 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 176 transitions. [2024-11-21 20:50:50,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-21 20:50:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 176 transitions. [2024-11-21 20:50:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-21 20:50:50,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:50,554 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:50,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-21 20:50:50,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-21 20:50:50,758 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:50,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:50,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1267652059, now seen corresponding path program 7 times [2024-11-21 20:50:50,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:50,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741640453] [2024-11-21 20:50:50,759 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:50:50,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:50:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-21 20:50:51,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741640453] [2024-11-21 20:50:51,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741640453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:50:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174781862] [2024-11-21 20:50:51,232 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:50:51,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:51,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:51,234 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:50:51,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-21 20:50:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:50:51,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-21 20:50:51,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:50:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-21 20:50:51,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:50:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-21 20:50:51,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174781862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:50:51,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:50:51,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-21 20:50:51,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8940796] [2024-11-21 20:50:51,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:50:51,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-21 20:50:51,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:50:51,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-21 20:50:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:50:51,731 INFO L87 Difference]: Start difference. First operand 144 states and 176 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 20:50:51,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:50:51,802 INFO L93 Difference]: Finished difference Result 289 states and 364 transitions. [2024-11-21 20:50:51,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-21 20:50:51,803 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 237 [2024-11-21 20:50:51,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:50:51,805 INFO L225 Difference]: With dead ends: 289 [2024-11-21 20:50:51,805 INFO L226 Difference]: Without dead ends: 168 [2024-11-21 20:50:51,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:50:51,806 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:50:51,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 87 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:50:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-21 20:50:51,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-21 20:50:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.1901840490797546) internal successors, (194), 163 states have internal predecessors, (194), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:51,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 200 transitions. [2024-11-21 20:50:51,829 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 200 transitions. Word has length 237 [2024-11-21 20:50:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:50:51,829 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 200 transitions. [2024-11-21 20:50:51,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 20:50:51,830 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 200 transitions. [2024-11-21 20:50:51,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-21 20:50:51,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:51,832 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 22, 22, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:51,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-21 20:50:52,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-21 20:50:52,034 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:52,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:52,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1682766477, now seen corresponding path program 8 times [2024-11-21 20:50:52,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:52,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471818231] [2024-11-21 20:50:52,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:50:52,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:52,113 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:50:52,113 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-21 20:50:53,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:53,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471818231] [2024-11-21 20:50:53,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471818231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:50:53,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647603103] [2024-11-21 20:50:53,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:50:53,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:53,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:53,146 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:50:53,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-21 20:50:53,361 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:50:53,361 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:53,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-21 20:50:53,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:50:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-21 20:50:53,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:50:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-21 20:50:54,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647603103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:50:54,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:50:54,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-21 20:50:54,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68042481] [2024-11-21 20:50:54,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:50:54,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-21 20:50:54,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:50:54,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-21 20:50:54,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-21 20:50:54,316 INFO L87 Difference]: Start difference. First operand 168 states and 200 transitions. Second operand has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 20:50:54,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:50:54,463 INFO L93 Difference]: Finished difference Result 337 states and 424 transitions. [2024-11-21 20:50:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-21 20:50:54,464 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 261 [2024-11-21 20:50:54,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:50:54,465 INFO L225 Difference]: With dead ends: 337 [2024-11-21 20:50:54,465 INFO L226 Difference]: Without dead ends: 216 [2024-11-21 20:50:54,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-21 20:50:54,467 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:50:54,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 171 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:50:54,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-21 20:50:54,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-21 20:50:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.146919431279621) internal successors, (242), 211 states have internal predecessors, (242), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 248 transitions. [2024-11-21 20:50:54,478 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 248 transitions. Word has length 261 [2024-11-21 20:50:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:50:54,478 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 248 transitions. [2024-11-21 20:50:54,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 20:50:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 248 transitions. [2024-11-21 20:50:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-21 20:50:54,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:54,482 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 42, 42, 42, 42, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:54,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-21 20:50:54,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-21 20:50:54,686 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:54,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash -264604835, now seen corresponding path program 9 times [2024-11-21 20:50:54,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:54,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445148136] [2024-11-21 20:50:54,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:50:54,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:54,839 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-21 20:50:54,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5801 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5701 trivial. 0 not checked. [2024-11-21 20:50:55,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:55,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445148136] [2024-11-21 20:50:55,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445148136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:50:55,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325335465] [2024-11-21 20:50:55,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:50:55,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:55,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:55,156 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:50:55,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-21 20:50:55,595 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-21 20:50:55,596 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:55,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-21 20:50:55,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:50:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5801 backedges. 1634 proven. 100 refuted. 0 times theorem prover too weak. 4067 trivial. 0 not checked. [2024-11-21 20:50:55,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:50:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5801 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5701 trivial. 0 not checked. [2024-11-21 20:50:55,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325335465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:50:55,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:50:55,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-21 20:50:55,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757627126] [2024-11-21 20:50:55,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:50:55,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-21 20:50:55,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:50:55,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-21 20:50:55,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:50:55,916 INFO L87 Difference]: Start difference. First operand 216 states and 248 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-21 20:50:56,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:50:56,021 INFO L93 Difference]: Finished difference Result 335 states and 407 transitions. [2024-11-21 20:50:56,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-21 20:50:56,021 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 309 [2024-11-21 20:50:56,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:50:56,023 INFO L225 Difference]: With dead ends: 335 [2024-11-21 20:50:56,023 INFO L226 Difference]: Without dead ends: 240 [2024-11-21 20:50:56,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:50:56,024 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:50:56,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 193 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:50:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-21 20:50:56,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-11-21 20:50:56,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 235 states have (on average 1.1319148936170214) internal successors, (266), 235 states have internal predecessors, (266), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:50:56,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2024-11-21 20:50:56,035 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 309 [2024-11-21 20:50:56,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:50:56,035 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2024-11-21 20:50:56,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-21 20:50:56,036 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2024-11-21 20:50:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-21 20:50:56,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:50:56,039 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 42, 42, 42, 42, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:50:56,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-21 20:50:56,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-21 20:50:56,244 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:50:56,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:50:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash 203325125, now seen corresponding path program 10 times [2024-11-21 20:50:56,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:50:56,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571305934] [2024-11-21 20:50:56,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:50:56,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:50:56,345 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:50:56,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6185 backedges. 1632 proven. 378 refuted. 0 times theorem prover too weak. 4175 trivial. 0 not checked. [2024-11-21 20:50:56,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:50:56,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571305934] [2024-11-21 20:50:56,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571305934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:50:56,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601089788] [2024-11-21 20:50:56,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:50:56,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:50:56,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:50:56,977 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:50:56,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-21 20:50:57,279 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:50:57,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:50:57,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-21 20:50:57,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:50:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6185 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 4069 trivial. 0 not checked. [2024-11-21 20:50:58,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:51:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6185 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 4069 trivial. 0 not checked. [2024-11-21 20:51:01,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601089788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:51:01,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:51:01,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 49, 49] total 111 [2024-11-21 20:51:01,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854227832] [2024-11-21 20:51:01,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:51:01,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-11-21 20:51:01,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:51:01,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-11-21 20:51:01,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4695, Invalid=7515, Unknown=0, NotChecked=0, Total=12210 [2024-11-21 20:51:01,506 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand has 111 states, 111 states have (on average 2.5585585585585586) internal successors, (284), 111 states have internal predecessors, (284), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-21 20:51:01,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:51:01,868 INFO L93 Difference]: Finished difference Result 492 states and 611 transitions. [2024-11-21 20:51:01,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-21 20:51:01,869 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.5585585585585586) internal successors, (284), 111 states have internal predecessors, (284), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 333 [2024-11-21 20:51:01,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:51:01,871 INFO L225 Difference]: With dead ends: 492 [2024-11-21 20:51:01,871 INFO L226 Difference]: Without dead ends: 347 [2024-11-21 20:51:01,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1316 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4695, Invalid=7515, Unknown=0, NotChecked=0, Total=12210 [2024-11-21 20:51:01,875 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 145 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 20:51:01,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 286 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 20:51:01,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-21 20:51:01,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 342. [2024-11-21 20:51:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 337 states have (on average 1.0979228486646884) internal successors, (370), 337 states have internal predecessors, (370), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:51:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 376 transitions. [2024-11-21 20:51:01,886 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 376 transitions. Word has length 333 [2024-11-21 20:51:01,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:51:01,887 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 376 transitions. [2024-11-21 20:51:01,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.5585585585585586) internal successors, (284), 111 states have internal predecessors, (284), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-21 20:51:01,887 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 376 transitions. [2024-11-21 20:51:01,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-21 20:51:01,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:51:01,893 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 45, 45, 45, 45, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:51:01,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-21 20:51:02,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-21 20:51:02,097 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:51:02,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:51:02,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1473900352, now seen corresponding path program 11 times [2024-11-21 20:51:02,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:51:02,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751376013] [2024-11-21 20:51:02,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:51:02,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:51:05,083 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2024-11-21 20:51:05,083 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:51:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 13430 backedges. 934 proven. 1369 refuted. 0 times theorem prover too weak. 11127 trivial. 0 not checked. [2024-11-21 20:51:05,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:51:05,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751376013] [2024-11-21 20:51:05,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751376013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:51:05,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668998057] [2024-11-21 20:51:05,839 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:51:05,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:51:05,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:51:05,842 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:51:05,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process