./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array21_pattern.c --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-patterns/array21_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1a738dced8b73ebc8edf3e480fddcd32bb19127a8255980e93fab5e96705ab3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:59:23,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:59:23,640 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:59:23,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:59:23,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:59:23,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:59:23,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:59:23,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:59:23,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:59:23,668 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:59:23,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:59:23,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:59:23,669 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:59:23,669 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:59:23,671 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:59:23,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:59:23,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:59:23,671 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:59:23,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:59:23,672 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:59:23,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:59:23,674 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:59:23,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:59:23,675 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:59:23,675 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:59:23,675 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:59:23,675 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:59:23,675 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:59:23,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:59:23,676 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:59:23,676 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:59:23,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:59:23,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:59:23,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:59:23,677 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:59:23,677 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:59:23,677 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:59:23,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:59:23,677 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:59:23,677 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:59:23,678 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:59:23,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:59:23,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1a738dced8b73ebc8edf3e480fddcd32bb19127a8255980e93fab5e96705ab3 [2024-11-21 20:59:23,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:59:23,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:59:23,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:59:23,885 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:59:23,885 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:59:23,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array21_pattern.c [2024-11-21 20:59:25,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:59:25,263 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:59:25,264 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array21_pattern.c [2024-11-21 20:59:25,269 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9da8461d/3f8a8671cad14c4f811397173d7ed37e/FLAG5970cd395 [2024-11-21 20:59:25,687 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9da8461d/3f8a8671cad14c4f811397173d7ed37e [2024-11-21 20:59:25,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:59:25,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:59:25,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:59:25,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:59:25,696 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:59:25,697 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e80f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25, skipping insertion in model container [2024-11-21 20:59:25,698 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,712 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:59:25,847 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-patterns/array21_pattern.c[1340,1353] [2024-11-21 20:59:25,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:59:25,878 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:59:25,887 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-patterns/array21_pattern.c[1340,1353] [2024-11-21 20:59:25,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:59:25,913 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:59:25,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25 WrapperNode [2024-11-21 20:59:25,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:59:25,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:59:25,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:59:25,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:59:25,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,927 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,943 INFO L138 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 107 [2024-11-21 20:59:25,943 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:59:25,944 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:59:25,944 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:59:25,944 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:59:25,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,955 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,965 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-21 20:59:25,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,969 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,972 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:25,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:59:25,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:59:25,976 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:59:25,976 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:59:25,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (1/1) ... [2024-11-21 20:59:26,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:59:26,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:59:26,030 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 20:59:26,036 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 20:59:26,088 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2024-11-21 20:59:26,089 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2024-11-21 20:59:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:59:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-21 20:59:26,090 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-21 20:59:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:59:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:59:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:59:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:59:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:59:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:59:26,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:59:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:59:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:59:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:59:26,148 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:59:26,149 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:59:26,301 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-21 20:59:26,301 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:59:26,309 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:59:26,310 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-21 20:59:26,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:26 BoogieIcfgContainer [2024-11-21 20:59:26,310 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:59:26,312 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:59:26,312 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:59:26,315 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:59:26,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:59:25" (1/3) ... [2024-11-21 20:59:26,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367eb560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:26, skipping insertion in model container [2024-11-21 20:59:26,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25" (2/3) ... [2024-11-21 20:59:26,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367eb560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:26, skipping insertion in model container [2024-11-21 20:59:26,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:26" (3/3) ... [2024-11-21 20:59:26,317 INFO L112 eAbstractionObserver]: Analyzing ICFG array21_pattern.c [2024-11-21 20:59:26,330 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:59:26,330 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:59:26,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:59:26,384 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;@50105fb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:59:26,384 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:59:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-21 20:59:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-21 20:59:26,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:26,393 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:26,393 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:26,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:26,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times [2024-11-21 20:59:26,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:26,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331633784] [2024-11-21 20:59:26,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:26,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:59:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:59:26,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:59:26,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331633784] [2024-11-21 20:59:26,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331633784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:59:26,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:59:26,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 20:59:26,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376327474] [2024-11-21 20:59:26,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:59:26,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-21 20:59:26,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:59:26,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-21 20:59:26,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-21 20:59:26,532 INFO L87 Difference]: Start difference. First operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-21 20:59:26,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:59:26,547 INFO L93 Difference]: Finished difference Result 77 states and 115 transitions. [2024-11-21 20:59:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 20:59:26,551 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-21 20:59:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:59:26,555 INFO L225 Difference]: With dead ends: 77 [2024-11-21 20:59:26,556 INFO L226 Difference]: Without dead ends: 36 [2024-11-21 20:59:26,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-21 20:59:26,560 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:59:26,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:59:26,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-21 20:59:26,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-21 20:59:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-21 20:59:26,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2024-11-21 20:59:26,585 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 15 [2024-11-21 20:59:26,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:59:26,585 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2024-11-21 20:59:26,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-21 20:59:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2024-11-21 20:59:26,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-21 20:59:26,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:26,587 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:26,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:59:26,588 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:26,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:26,589 INFO L85 PathProgramCache]: Analyzing trace with hash -699940082, now seen corresponding path program 1 times [2024-11-21 20:59:26,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:26,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234017170] [2024-11-21 20:59:26,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:26,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:59:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 20:59:26,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:59:26,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234017170] [2024-11-21 20:59:26,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234017170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:59:26,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630364575] [2024-11-21 20:59:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:26,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:26,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:59:26,859 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 20:59:26,860 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 20:59:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:59:26,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-21 20:59:26,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:59:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:59:26,995 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 20:59:26,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630364575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:59:26,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 20:59:26,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-21 20:59:26,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760028623] [2024-11-21 20:59:26,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:59:27,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-21 20:59:27,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:59:27,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-21 20:59:27,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-21 20:59:27,001 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-21 20:59:27,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:59:27,089 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2024-11-21 20:59:27,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:59:27,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2024-11-21 20:59:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:59:27,090 INFO L225 Difference]: With dead ends: 82 [2024-11-21 20:59:27,090 INFO L226 Difference]: Without dead ends: 48 [2024-11-21 20:59:27,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-21 20:59:27,092 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:59:27,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 126 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:59:27,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-21 20:59:27,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2024-11-21 20:59:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-21 20:59:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2024-11-21 20:59:27,103 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 35 [2024-11-21 20:59:27,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:59:27,104 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2024-11-21 20:59:27,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-21 20:59:27,105 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2024-11-21 20:59:27,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-21 20:59:27,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:27,105 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:27,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-21 20:59:27,306 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 20:59:27,307 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:27,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1511137102, now seen corresponding path program 1 times [2024-11-21 20:59:27,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:27,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448303779] [2024-11-21 20:59:27,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:27,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:59:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-21 20:59:27,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:59:27,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448303779] [2024-11-21 20:59:27,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448303779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:59:27,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:59:27,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:59:27,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904114100] [2024-11-21 20:59:27,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:59:27,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:59:27,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:59:27,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:59:27,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:59:27,397 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-21 20:59:27,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:59:27,437 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2024-11-21 20:59:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:59:27,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2024-11-21 20:59:27,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:59:27,439 INFO L225 Difference]: With dead ends: 80 [2024-11-21 20:59:27,439 INFO L226 Difference]: Without dead ends: 48 [2024-11-21 20:59:27,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:59:27,440 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 13 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:59:27,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:59:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-21 20:59:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2024-11-21 20:59:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-21 20:59:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-11-21 20:59:27,446 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 38 [2024-11-21 20:59:27,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:59:27,446 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-11-21 20:59:27,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-21 20:59:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-11-21 20:59:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-21 20:59:27,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:27,447 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:27,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 20:59:27,448 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:27,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:27,448 INFO L85 PathProgramCache]: Analyzing trace with hash -50149008, now seen corresponding path program 1 times [2024-11-21 20:59:27,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:27,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257693059] [2024-11-21 20:59:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:27,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:59:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-21 20:59:27,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:59:27,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257693059] [2024-11-21 20:59:27,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257693059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:59:27,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254444301] [2024-11-21 20:59:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:27,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:27,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:59:27,659 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 20:59:27,664 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 20:59:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:59:27,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 20:59:27,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:59:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-21 20:59:27,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:59:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-21 20:59:27,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254444301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:59:27,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:59:27,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-11-21 20:59:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959723588] [2024-11-21 20:59:27,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:59:27,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-21 20:59:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:59:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-21 20:59:27,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-21 20:59:27,888 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-21 20:59:28,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:59:28,009 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-11-21 20:59:28,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-21 20:59:28,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 40 [2024-11-21 20:59:28,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:59:28,010 INFO L225 Difference]: With dead ends: 54 [2024-11-21 20:59:28,010 INFO L226 Difference]: Without dead ends: 50 [2024-11-21 20:59:28,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-21 20:59:28,011 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 57 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:59:28,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 138 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:59:28,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-21 20:59:28,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2024-11-21 20:59:28,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-21 20:59:28,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-11-21 20:59:28,017 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 40 [2024-11-21 20:59:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:59:28,017 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-11-21 20:59:28,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-21 20:59:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-11-21 20:59:28,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-21 20:59:28,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:28,018 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:28,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-21 20:59:28,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-21 20:59:28,220 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:28,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:28,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1300942485, now seen corresponding path program 1 times [2024-11-21 20:59:28,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:28,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890315385] [2024-11-21 20:59:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:28,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:59:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-21 20:59:28,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:59:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890315385] [2024-11-21 20:59:28,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890315385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:59:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188030498] [2024-11-21 20:59:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:28,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:28,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:59:28,345 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 20:59:28,349 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 20:59:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:59:28,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 20:59:28,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:59:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 20:59:28,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:59:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-21 20:59:28,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188030498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:59:28,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:59:28,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-21 20:59:28,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333744846] [2024-11-21 20:59:28,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:59:28,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-21 20:59:28,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:59:28,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-21 20:59:28,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-21 20:59:28,521 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-21 20:59:28,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:59:28,633 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2024-11-21 20:59:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-21 20:59:28,634 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2024-11-21 20:59:28,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:59:28,635 INFO L225 Difference]: With dead ends: 86 [2024-11-21 20:59:28,635 INFO L226 Difference]: Without dead ends: 52 [2024-11-21 20:59:28,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-21 20:59:28,638 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 52 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:59:28,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 91 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:59:28,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-21 20:59:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2024-11-21 20:59:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-21 20:59:28,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2024-11-21 20:59:28,648 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 45 [2024-11-21 20:59:28,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:59:28,649 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2024-11-21 20:59:28,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-21 20:59:28,649 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2024-11-21 20:59:28,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-21 20:59:28,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:28,651 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:28,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-21 20:59:28,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:28,852 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:28,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:28,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1544610617, now seen corresponding path program 2 times [2024-11-21 20:59:28,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:28,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565674750] [2024-11-21 20:59:28,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:59:28,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:28,875 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:59:28,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:59:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-21 20:59:28,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:59:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565674750] [2024-11-21 20:59:28,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565674750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:59:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235706803] [2024-11-21 20:59:28,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:59:28,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:28,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:59:28,940 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 20:59:28,940 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 20:59:28,982 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:59:28,983 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:59:28,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 20:59:28,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:59:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-21 20:59:29,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:59:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-21 20:59:29,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235706803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:59:29,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:59:29,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-21 20:59:29,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551107303] [2024-11-21 20:59:29,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:59:29,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-21 20:59:29,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:59:29,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-21 20:59:29,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-21 20:59:29,099 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 20:59:29,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:59:29,209 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2024-11-21 20:59:29,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-21 20:59:29,209 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2024-11-21 20:59:29,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:59:29,211 INFO L225 Difference]: With dead ends: 106 [2024-11-21 20:59:29,211 INFO L226 Difference]: Without dead ends: 74 [2024-11-21 20:59:29,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-21 20:59:29,212 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 33 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:59:29,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 168 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:59:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-21 20:59:29,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2024-11-21 20:59:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-21 20:59:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2024-11-21 20:59:29,224 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 49 [2024-11-21 20:59:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:59:29,225 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2024-11-21 20:59:29,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 20:59:29,225 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2024-11-21 20:59:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-21 20:59:29,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:29,227 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:29,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-21 20:59:29,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:29,428 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:29,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:29,428 INFO L85 PathProgramCache]: Analyzing trace with hash -725408594, now seen corresponding path program 3 times [2024-11-21 20:59:29,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:29,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515650620] [2024-11-21 20:59:29,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:59:29,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:29,464 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-21 20:59:29,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-21 20:59:29,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848206245] [2024-11-21 20:59:29,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:59:29,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:29,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:59:29,469 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 20:59:29,471 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 20:59:29,617 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-21 20:59:29,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:59:29,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-21 20:59:29,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:59:29,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-21 20:59:29,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-21 20:59:29,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:29,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:29,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:59:29,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2024-11-21 20:59:29,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:29,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:29,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:29,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:29,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:59:29,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-21 20:59:30,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:30,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:30,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:30,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:30,897 INFO L349 Elim1Store]: treesize reduction 226, result has 34.5 percent of original size [2024-11-21 20:59:30,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 88 treesize of output 158 [2024-11-21 20:59:32,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:32,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:32,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:32,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:59:32,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:59:32,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 184 [2024-11-21 20:59:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-21 20:59:33,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:59:39,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:59:39,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515650620] [2024-11-21 20:59:39,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-21 20:59:39,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848206245] [2024-11-21 20:59:39,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848206245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:59:39,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-21 20:59:39,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2024-11-21 20:59:39,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031013070] [2024-11-21 20:59:39,596 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-21 20:59:39,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-21 20:59:39,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:59:39,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-21 20:59:39,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2339, Unknown=1, NotChecked=0, Total=2652 [2024-11-21 20:59:39,598 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 32 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-21 20:59:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:59:41,870 INFO L93 Difference]: Finished difference Result 226 states and 293 transitions. [2024-11-21 20:59:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-21 20:59:41,871 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 32 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 63 [2024-11-21 20:59:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:59:41,873 INFO L225 Difference]: With dead ends: 226 [2024-11-21 20:59:41,873 INFO L226 Difference]: Without dead ends: 185 [2024-11-21 20:59:41,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=675, Invalid=4874, Unknown=1, NotChecked=0, Total=5550 [2024-11-21 20:59:41,875 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 101 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:59:41,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 456 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-21 20:59:41,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-21 20:59:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 98. [2024-11-21 20:59:41,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 83 states have internal predecessors, (97), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-21 20:59:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2024-11-21 20:59:41,891 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 63 [2024-11-21 20:59:41,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:59:41,891 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2024-11-21 20:59:41,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 32 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-21 20:59:41,892 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2024-11-21 20:59:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-21 20:59:41,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:41,893 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:41,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-21 20:59:42,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:42,097 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:42,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:42,097 INFO L85 PathProgramCache]: Analyzing trace with hash 236205423, now seen corresponding path program 1 times [2024-11-21 20:59:42,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:42,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488412774] [2024-11-21 20:59:42,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:42,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:59:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-21 20:59:42,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:59:42,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488412774] [2024-11-21 20:59:42,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488412774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:59:42,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:59:42,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-21 20:59:42,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511298045] [2024-11-21 20:59:42,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:59:42,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 20:59:42,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:59:42,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 20:59:42,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:59:42,161 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-21 20:59:42,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:59:42,189 INFO L93 Difference]: Finished difference Result 141 states and 170 transitions. [2024-11-21 20:59:42,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 20:59:42,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2024-11-21 20:59:42,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:59:42,191 INFO L225 Difference]: With dead ends: 141 [2024-11-21 20:59:42,191 INFO L226 Difference]: Without dead ends: 102 [2024-11-21 20:59:42,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:59:42,192 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:59:42,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:59:42,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-21 20:59:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-21 20:59:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 86 states have internal predecessors, (99), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2024-11-21 20:59:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2024-11-21 20:59:42,206 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 63 [2024-11-21 20:59:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:59:42,206 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2024-11-21 20:59:42,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-21 20:59:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2024-11-21 20:59:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-21 20:59:42,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:42,207 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:42,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 20:59:42,207 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:42,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1172698608, now seen corresponding path program 4 times [2024-11-21 20:59:42,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:42,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753403498] [2024-11-21 20:59:42,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:59:42,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:42,222 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:59:42,222 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:59:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-21 20:59:42,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:59:42,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753403498] [2024-11-21 20:59:42,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753403498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:59:42,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118351216] [2024-11-21 20:59:42,290 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:59:42,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:42,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:59:42,296 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 20:59:42,299 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 20:59:42,343 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:59:42,343 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:59:42,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 20:59:42,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:59:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-21 20:59:42,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:59:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-21 20:59:42,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118351216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:59:42,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:59:42,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-21 20:59:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945402730] [2024-11-21 20:59:42,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:59:42,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-21 20:59:42,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:59:42,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-21 20:59:42,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-21 20:59:42,503 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 20:59:42,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:59:42,629 INFO L93 Difference]: Finished difference Result 281 states and 339 transitions. [2024-11-21 20:59:42,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-21 20:59:42,633 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-21 20:59:42,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:59:42,634 INFO L225 Difference]: With dead ends: 281 [2024-11-21 20:59:42,635 INFO L226 Difference]: Without dead ends: 195 [2024-11-21 20:59:42,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-21 20:59:42,635 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 23 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:59:42,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 167 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:59:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-21 20:59:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 181. [2024-11-21 20:59:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 150 states have (on average 1.1666666666666667) internal successors, (175), 152 states have internal predecessors, (175), 17 states have call successors, (17), 9 states have call predecessors, (17), 13 states have return successors, (25), 19 states have call predecessors, (25), 17 states have call successors, (25) [2024-11-21 20:59:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 217 transitions. [2024-11-21 20:59:42,658 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 217 transitions. Word has length 65 [2024-11-21 20:59:42,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:59:42,658 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 217 transitions. [2024-11-21 20:59:42,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 20:59:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 217 transitions. [2024-11-21 20:59:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-21 20:59:42,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:42,659 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:42,670 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 20:59:42,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:42,863 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:42,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:42,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1276732650, now seen corresponding path program 1 times [2024-11-21 20:59:42,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:42,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350119757] [2024-11-21 20:59:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:42,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:59:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-21 20:59:43,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:59:43,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350119757] [2024-11-21 20:59:43,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350119757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:59:43,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542063375] [2024-11-21 20:59:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:43,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:43,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:59:43,044 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 20:59:43,045 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 20:59:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:59:43,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-21 20:59:43,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:59:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-21 20:59:43,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:59:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-21 20:59:43,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542063375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:59:43,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:59:43,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 22 [2024-11-21 20:59:43,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032579785] [2024-11-21 20:59:43,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:59:43,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-21 20:59:43,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:59:43,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-21 20:59:43,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2024-11-21 20:59:43,386 INFO L87 Difference]: Start difference. First operand 181 states and 217 transitions. Second operand has 22 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 5 states have call successors, (11), 4 states have call predecessors, (11), 9 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-21 20:59:43,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:59:43,752 INFO L93 Difference]: Finished difference Result 257 states and 299 transitions. [2024-11-21 20:59:43,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-21 20:59:43,753 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 5 states have call successors, (11), 4 states have call predecessors, (11), 9 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 69 [2024-11-21 20:59:43,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:59:43,754 INFO L225 Difference]: With dead ends: 257 [2024-11-21 20:59:43,754 INFO L226 Difference]: Without dead ends: 203 [2024-11-21 20:59:43,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2024-11-21 20:59:43,755 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 56 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 20:59:43,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 346 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 20:59:43,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-21 20:59:43,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 182. [2024-11-21 20:59:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 151 states have (on average 1.1655629139072847) internal successors, (176), 154 states have internal predecessors, (176), 17 states have call successors, (17), 10 states have call predecessors, (17), 13 states have return successors, (22), 17 states have call predecessors, (22), 17 states have call successors, (22) [2024-11-21 20:59:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 215 transitions. [2024-11-21 20:59:43,776 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 215 transitions. Word has length 69 [2024-11-21 20:59:43,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:59:43,776 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 215 transitions. [2024-11-21 20:59:43,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 5 states have call successors, (11), 4 states have call predecessors, (11), 9 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-21 20:59:43,776 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 215 transitions. [2024-11-21 20:59:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-21 20:59:43,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:43,777 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:43,783 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 20:59:43,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:43,978 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:43,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash 385728908, now seen corresponding path program 5 times [2024-11-21 20:59:43,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:43,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878844263] [2024-11-21 20:59:43,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:59:43,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:43,993 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-21 20:59:43,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:59:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-21 20:59:44,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:59:44,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878844263] [2024-11-21 20:59:44,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878844263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:59:44,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230792948] [2024-11-21 20:59:44,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:59:44,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:44,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:59:44,092 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 20:59:44,093 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 20:59:44,150 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-21 20:59:44,150 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:59:44,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 20:59:44,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:59:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-21 20:59:44,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:59:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-21 20:59:44,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230792948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:59:44,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:59:44,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-21 20:59:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116665835] [2024-11-21 20:59:44,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:59:44,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-21 20:59:44,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:59:44,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-21 20:59:44,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-21 20:59:44,288 INFO L87 Difference]: Start difference. First operand 182 states and 215 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 20:59:44,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:59:44,545 INFO L93 Difference]: Finished difference Result 395 states and 465 transitions. [2024-11-21 20:59:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-21 20:59:44,545 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-11-21 20:59:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:59:44,546 INFO L225 Difference]: With dead ends: 395 [2024-11-21 20:59:44,546 INFO L226 Difference]: Without dead ends: 253 [2024-11-21 20:59:44,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 126 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=524, Unknown=0, NotChecked=0, Total=756 [2024-11-21 20:59:44,547 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 62 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:59:44,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 201 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:59:44,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-21 20:59:44,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 200. [2024-11-21 20:59:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 169 states have (on average 1.1715976331360947) internal successors, (198), 172 states have internal predecessors, (198), 17 states have call successors, (17), 10 states have call predecessors, (17), 13 states have return successors, (22), 17 states have call predecessors, (22), 17 states have call successors, (22) [2024-11-21 20:59:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 237 transitions. [2024-11-21 20:59:44,570 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 237 transitions. Word has length 69 [2024-11-21 20:59:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:59:44,570 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 237 transitions. [2024-11-21 20:59:44,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 20:59:44,571 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 237 transitions. [2024-11-21 20:59:44,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-21 20:59:44,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:44,572 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:44,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-21 20:59:44,776 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,SelfDestructingSolverStorable10 [2024-11-21 20:59:44,777 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:44,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1130035513, now seen corresponding path program 6 times [2024-11-21 20:59:44,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:44,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668124962] [2024-11-21 20:59:44,778 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:59:44,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:44,802 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-21 20:59:44,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:59:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 31 proven. 21 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-21 20:59:44,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:59:44,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668124962] [2024-11-21 20:59:44,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668124962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:59:44,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725334125] [2024-11-21 20:59:44,875 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:59:44,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:44,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:59:44,878 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 20:59:44,879 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 20:59:44,950 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-21 20:59:44,951 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:59:44,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 20:59:44,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:59:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-21 20:59:45,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:59:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 17 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-21 20:59:45,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725334125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:59:45,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:59:45,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-21 20:59:45,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9677439] [2024-11-21 20:59:45,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:59:45,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-21 20:59:45,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:59:45,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-21 20:59:45,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-21 20:59:45,179 INFO L87 Difference]: Start difference. First operand 200 states and 237 transitions. Second operand has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-21 20:59:45,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:59:45,662 INFO L93 Difference]: Finished difference Result 377 states and 434 transitions. [2024-11-21 20:59:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-21 20:59:45,662 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 70 [2024-11-21 20:59:45,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:59:45,664 INFO L225 Difference]: With dead ends: 377 [2024-11-21 20:59:45,664 INFO L226 Difference]: Without dead ends: 272 [2024-11-21 20:59:45,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 145 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=1307, Unknown=0, NotChecked=0, Total=1640 [2024-11-21 20:59:45,665 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 133 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 20:59:45,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 587 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 20:59:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-21 20:59:45,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 197. [2024-11-21 20:59:45,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 167 states have internal predecessors, (186), 18 states have call successors, (18), 11 states have call predecessors, (18), 14 states have return successors, (23), 18 states have call predecessors, (23), 18 states have call successors, (23) [2024-11-21 20:59:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2024-11-21 20:59:45,687 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 70 [2024-11-21 20:59:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:59:45,687 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2024-11-21 20:59:45,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-21 20:59:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2024-11-21 20:59:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-21 20:59:45,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:59:45,689 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:59:45,695 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 20:59:45,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:45,893 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:59:45,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:59:45,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2141231294, now seen corresponding path program 1 times [2024-11-21 20:59:45,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:59:45,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207920784] [2024-11-21 20:59:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:45,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:59:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-21 20:59:45,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915753598] [2024-11-21 20:59:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:59:45,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:59:45,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:59:45,918 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 20:59:45,920 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 20:59:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:59:46,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-21 20:59:46,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:59:46,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-21 20:59:46,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-21 20:59:46,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:59:46,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-21 20:59:46,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:59:46,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-21 20:59:47,117 INFO L349 Elim1Store]: treesize reduction 64, result has 48.8 percent of original size [2024-11-21 20:59:47,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 86 [2024-11-21 21:00:04,830 INFO L349 Elim1Store]: treesize reduction 90, result has 59.8 percent of original size [2024-11-21 21:00:04,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 140 treesize of output 203 [2024-11-21 21:00:11,353 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:00:11,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 449 treesize of output 733