./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/EvenOdd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/EvenOdd01-1.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 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:22:30,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:22:30,918 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:22:30,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:22:30,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:22:30,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:22:30,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:22:30,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:22:30,952 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:22:30,952 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:22:30,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:22:30,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:22:30,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:22:30,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:22:30,955 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:22:30,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:22:30,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:22:30,956 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:22:30,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:22:30,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:22:30,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:22:30,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:22:30,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:22:30,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:22:30,961 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:22:30,961 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:22:30,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:22:30,961 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:22:30,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:22:30,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:22:30,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:22:30,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:22:30,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:22:30,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:22:30,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:22:30,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:22:30,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:22:30,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:22:30,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:22:30,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:22:30,963 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:22:30,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:22:30,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc [2024-11-18 14:22:31,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:22:31,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:22:31,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:22:31,248 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:22:31,248 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:22:31,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-11-18 14:22:32,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:22:32,937 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:22:32,938 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-11-18 14:22:32,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3262646aa/94dfded065934949865adf6e178b0f41/FLAG69f92673c [2024-11-18 14:22:32,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3262646aa/94dfded065934949865adf6e178b0f41 [2024-11-18 14:22:32,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:22:32,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:22:32,990 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:22:32,990 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:22:32,999 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:22:33,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:22:32" (1/1) ... [2024-11-18 14:22:33,005 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5352e60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33, skipping insertion in model container [2024-11-18 14:22:33,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:22:32" (1/1) ... [2024-11-18 14:22:33,041 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:22:33,305 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/recursive/EvenOdd01-1.c[975,988] [2024-11-18 14:22:33,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:22:33,321 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:22:33,354 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/recursive/EvenOdd01-1.c[975,988] [2024-11-18 14:22:33,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:22:33,371 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:22:33,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33 WrapperNode [2024-11-18 14:22:33,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:22:33,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:22:33,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:22:33,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:22:33,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (1/1) ... [2024-11-18 14:22:33,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (1/1) ... [2024-11-18 14:22:33,410 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-11-18 14:22:33,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:22:33,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:22:33,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:22:33,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:22:33,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (1/1) ... [2024-11-18 14:22:33,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (1/1) ... [2024-11-18 14:22:33,420 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (1/1) ... [2024-11-18 14:22:33,433 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 14:22:33,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (1/1) ... [2024-11-18 14:22:33,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (1/1) ... [2024-11-18 14:22:33,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (1/1) ... [2024-11-18 14:22:33,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (1/1) ... [2024-11-18 14:22:33,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (1/1) ... [2024-11-18 14:22:33,447 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (1/1) ... [2024-11-18 14:22:33,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:22:33,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:22:33,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:22:33,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:22:33,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (1/1) ... [2024-11-18 14:22:33,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:22:33,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:33,507 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) [2024-11-18 14:22:33,514 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 [2024-11-18 14:22:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:22:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2024-11-18 14:22:33,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2024-11-18 14:22:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:22:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2024-11-18 14:22:33,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2024-11-18 14:22:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:22:33,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:22:33,680 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:22:33,683 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:22:33,792 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-18 14:22:33,793 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:22:33,801 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:22:33,802 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 14:22:33,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:22:33 BoogieIcfgContainer [2024-11-18 14:22:33,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:22:33,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:22:33,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:22:33,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:22:33,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:22:32" (1/3) ... [2024-11-18 14:22:33,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d6f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:22:33, skipping insertion in model container [2024-11-18 14:22:33,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:33" (2/3) ... [2024-11-18 14:22:33,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d6f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:22:33, skipping insertion in model container [2024-11-18 14:22:33,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:22:33" (3/3) ... [2024-11-18 14:22:33,809 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2024-11-18 14:22:33,824 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:22:33,825 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:22:33,865 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:22:33,870 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;@64ae74e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:22:33,870 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:22:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:22:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 14:22:33,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:33,878 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:33,878 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:33,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:33,882 INFO L85 PathProgramCache]: Analyzing trace with hash 951696528, now seen corresponding path program 1 times [2024-11-18 14:22:33,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:33,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535559379] [2024-11-18 14:22:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:33,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:22:34,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:34,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535559379] [2024-11-18 14:22:34,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535559379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:22:34,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:22:34,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:22:34,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236825215] [2024-11-18 14:22:34,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:22:34,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:22:34,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:22:34,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:22:34,360 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2024-11-18 14:22:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:34,449 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-18 14:22:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:22:34,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 11 [2024-11-18 14:22:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:34,460 INFO L225 Difference]: With dead ends: 36 [2024-11-18 14:22:34,461 INFO L226 Difference]: Without dead ends: 26 [2024-11-18 14:22:34,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:22:34,467 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:34,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:22:34,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-18 14:22:34,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-18 14:22:34,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 14:22:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-18 14:22:34,507 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 11 [2024-11-18 14:22:34,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:34,507 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-18 14:22:34,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2024-11-18 14:22:34,507 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-18 14:22:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-18 14:22:34,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:34,509 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:34,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:22:34,509 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:34,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:34,510 INFO L85 PathProgramCache]: Analyzing trace with hash 186374926, now seen corresponding path program 1 times [2024-11-18 14:22:34,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:34,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411851011] [2024-11-18 14:22:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:34,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:22:34,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:34,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411851011] [2024-11-18 14:22:34,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411851011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:22:34,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:22:34,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:22:34,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659872389] [2024-11-18 14:22:34,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:22:34,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:22:34,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:22:34,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:22:34,754 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2024-11-18 14:22:34,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:34,809 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-11-18 14:22:34,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:22:34,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 12 [2024-11-18 14:22:34,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:34,811 INFO L225 Difference]: With dead ends: 30 [2024-11-18 14:22:34,811 INFO L226 Difference]: Without dead ends: 26 [2024-11-18 14:22:34,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:22:34,812 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:34,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 94 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:22:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-18 14:22:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-18 14:22:34,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 14:22:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-18 14:22:34,818 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2024-11-18 14:22:34,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:34,818 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-18 14:22:34,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2024-11-18 14:22:34,818 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-18 14:22:34,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 14:22:34,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:34,819 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:34,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:22:34,820 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:34,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:34,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1539294770, now seen corresponding path program 1 times [2024-11-18 14:22:34,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:34,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523229703] [2024-11-18 14:22:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:34,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:22:34,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:34,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523229703] [2024-11-18 14:22:34,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523229703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:22:34,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:22:34,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:22:34,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232416638] [2024-11-18 14:22:34,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:22:34,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:22:34,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:22:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:22:34,885 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 14:22:34,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:34,907 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-11-18 14:22:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:22:34,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-18 14:22:34,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:34,908 INFO L225 Difference]: With dead ends: 38 [2024-11-18 14:22:34,908 INFO L226 Difference]: Without dead ends: 26 [2024-11-18 14:22:34,908 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 [2024-11-18 14:22:34,909 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:34,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 82 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:22:34,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-18 14:22:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-18 14:22:34,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 14:22:34,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-18 14:22:34,913 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 18 [2024-11-18 14:22:34,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:34,914 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-18 14:22:34,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 14:22:34,914 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-18 14:22:34,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-18 14:22:34,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:34,915 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:34,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:22:34,915 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:34,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:34,915 INFO L85 PathProgramCache]: Analyzing trace with hash -542404186, now seen corresponding path program 1 times [2024-11-18 14:22:34,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:34,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717771893] [2024-11-18 14:22:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:34,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:22:35,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:35,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717771893] [2024-11-18 14:22:35,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717771893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:22:35,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:22:35,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 14:22:35,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573130265] [2024-11-18 14:22:35,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:22:35,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 14:22:35,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:35,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 14:22:35,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:22:35,094 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 14:22:35,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:35,181 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2024-11-18 14:22:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:22:35,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-18 14:22:35,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:35,182 INFO L225 Difference]: With dead ends: 33 [2024-11-18 14:22:35,182 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 14:22:35,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:22:35,183 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:35,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 104 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:22:35,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 14:22:35,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-18 14:22:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 14:22:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-18 14:22:35,188 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2024-11-18 14:22:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:35,188 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-18 14:22:35,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 14:22:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-18 14:22:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-18 14:22:35,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:35,189 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:35,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:22:35,189 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:35,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash 928601386, now seen corresponding path program 1 times [2024-11-18 14:22:35,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:35,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311167289] [2024-11-18 14:22:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:35,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:22:35,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:35,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311167289] [2024-11-18 14:22:35,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311167289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:22:35,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:22:35,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:22:35,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610218598] [2024-11-18 14:22:35,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:22:35,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:22:35,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:35,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:22:35,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:22:35,228 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 14:22:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:35,252 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2024-11-18 14:22:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:22:35,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-18 14:22:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:35,254 INFO L225 Difference]: With dead ends: 41 [2024-11-18 14:22:35,254 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 14:22:35,254 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 [2024-11-18 14:22:35,255 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:35,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 73 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:22:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 14:22:35,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-18 14:22:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 14:22:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-18 14:22:35,261 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 25 [2024-11-18 14:22:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:35,261 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-18 14:22:35,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 14:22:35,261 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-18 14:22:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 14:22:35,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:35,262 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:35,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:22:35,262 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:35,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:35,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1102972856, now seen corresponding path program 1 times [2024-11-18 14:22:35,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:35,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355117640] [2024-11-18 14:22:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:35,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:22:35,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355117640] [2024-11-18 14:22:35,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355117640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370331445] [2024-11-18 14:22:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:35,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:35,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:35,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:22:35,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:22:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:35,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 14:22:35,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:22:35,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:22:36,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370331445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:36,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:36,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2024-11-18 14:22:36,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15875399] [2024-11-18 14:22:36,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:36,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 14:22:36,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:36,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 14:22:36,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-18 14:22:36,486 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 14:22:36,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:36,794 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2024-11-18 14:22:36,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:22:36,795 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Word has length 26 [2024-11-18 14:22:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:36,796 INFO L225 Difference]: With dead ends: 39 [2024-11-18 14:22:36,796 INFO L226 Difference]: Without dead ends: 35 [2024-11-18 14:22:36,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:22:36,797 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:36,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 178 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:22:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-18 14:22:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2024-11-18 14:22:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 14:22:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-18 14:22:36,816 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 26 [2024-11-18 14:22:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:36,819 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-18 14:22:36,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 14:22:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-18 14:22:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 14:22:36,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:36,821 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:36,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:22:37,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 14:22:37,022 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:37,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash 550160832, now seen corresponding path program 1 times [2024-11-18 14:22:37,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:37,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206396473] [2024-11-18 14:22:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:37,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 14:22:37,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206396473] [2024-11-18 14:22:37,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206396473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727397855] [2024-11-18 14:22:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:37,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:37,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:37,548 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) [2024-11-18 14:22:37,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:22:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:37,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-18 14:22:37,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 14:22:37,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 14:22:38,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727397855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:38,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:38,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 23 [2024-11-18 14:22:38,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045465751] [2024-11-18 14:22:38,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:38,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:22:38,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:38,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:22:38,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:22:38,236 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 16 states have internal predecessors, (38), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-18 14:22:38,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:38,448 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-11-18 14:22:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:22:38,449 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 16 states have internal predecessors, (38), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 33 [2024-11-18 14:22:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:38,450 INFO L225 Difference]: With dead ends: 45 [2024-11-18 14:22:38,451 INFO L226 Difference]: Without dead ends: 41 [2024-11-18 14:22:38,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2024-11-18 14:22:38,452 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:38,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 157 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:22:38,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-18 14:22:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2024-11-18 14:22:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:22:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-11-18 14:22:38,462 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 33 [2024-11-18 14:22:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:38,462 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-11-18 14:22:38,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 16 states have internal predecessors, (38), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-18 14:22:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-11-18 14:22:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-18 14:22:38,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:38,463 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:38,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 14:22:38,664 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,SelfDestructingSolverStorable6 [2024-11-18 14:22:38,665 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:38,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash 780373730, now seen corresponding path program 2 times [2024-11-18 14:22:38,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:38,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366816723] [2024-11-18 14:22:38,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:22:38,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:38,677 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:22:38,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:22:38,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:38,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366816723] [2024-11-18 14:22:38,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366816723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:38,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647448473] [2024-11-18 14:22:38,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:22:38,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:38,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:38,936 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) [2024-11-18 14:22:38,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:22:38,973 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:22:38,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:38,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 14:22:38,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 14:22:39,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:22:39,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647448473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:39,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:39,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 18] total 27 [2024-11-18 14:22:39,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050536547] [2024-11-18 14:22:39,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:39,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 14:22:39,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:39,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 14:22:39,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:22:39,801 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-18 14:22:40,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:40,017 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2024-11-18 14:22:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 14:22:40,018 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 40 [2024-11-18 14:22:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:40,018 INFO L225 Difference]: With dead ends: 51 [2024-11-18 14:22:40,019 INFO L226 Difference]: Without dead ends: 47 [2024-11-18 14:22:40,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 14:22:40,020 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:40,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 215 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:22:40,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-18 14:22:40,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2024-11-18 14:22:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:22:40,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-18 14:22:40,025 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 40 [2024-11-18 14:22:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:40,025 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-18 14:22:40,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-18 14:22:40,026 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-18 14:22:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 14:22:40,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:40,026 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:40,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:22:40,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:40,228 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:40,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:40,228 INFO L85 PathProgramCache]: Analyzing trace with hash 866829402, now seen corresponding path program 2 times [2024-11-18 14:22:40,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:40,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376676243] [2024-11-18 14:22:40,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:22:40,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:40,236 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:22:40,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 14:22:40,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:40,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376676243] [2024-11-18 14:22:40,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376676243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:40,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340799361] [2024-11-18 14:22:40,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:22:40,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:40,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:40,507 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) [2024-11-18 14:22:40,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:22:40,543 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:22:40,543 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:40,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-18 14:22:40,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 14:22:40,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:22:41,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340799361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:41,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:41,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 21] total 29 [2024-11-18 14:22:41,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666273139] [2024-11-18 14:22:41,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:41,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 14:22:41,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:41,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 14:22:41,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2024-11-18 14:22:41,351 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 29 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 20 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-11-18 14:22:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:41,676 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2024-11-18 14:22:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:22:41,677 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 20 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) Word has length 47 [2024-11-18 14:22:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:41,678 INFO L225 Difference]: With dead ends: 57 [2024-11-18 14:22:41,678 INFO L226 Difference]: Without dead ends: 53 [2024-11-18 14:22:41,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 14:22:41,679 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:41,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 249 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:22:41,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-18 14:22:41,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2024-11-18 14:22:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:22:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-11-18 14:22:41,686 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 47 [2024-11-18 14:22:41,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:41,686 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-11-18 14:22:41,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 20 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-11-18 14:22:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-11-18 14:22:41,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 14:22:41,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:41,687 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:41,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:22:41,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:41,892 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:41,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:41,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1271721844, now seen corresponding path program 3 times [2024-11-18 14:22:41,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:41,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097019406] [2024-11-18 14:22:41,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:22:41,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:41,903 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 14:22:41,904 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 14:22:42,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:42,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097019406] [2024-11-18 14:22:42,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097019406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:42,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851071483] [2024-11-18 14:22:42,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:22:42,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:42,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:42,222 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) [2024-11-18 14:22:42,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:22:42,260 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 14:22:42,260 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:42,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-18 14:22:42,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 14:22:42,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:22:43,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851071483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:43,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:43,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24] total 33 [2024-11-18 14:22:43,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114796888] [2024-11-18 14:22:43,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:43,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 14:22:43,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:43,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 14:22:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 14:22:43,208 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 33 states, 32 states have (on average 1.75) internal successors, (56), 23 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2024-11-18 14:22:43,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:43,555 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2024-11-18 14:22:43,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 14:22:43,555 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.75) internal successors, (56), 23 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 54 [2024-11-18 14:22:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:43,556 INFO L225 Difference]: With dead ends: 63 [2024-11-18 14:22:43,556 INFO L226 Difference]: Without dead ends: 59 [2024-11-18 14:22:43,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=1773, Unknown=0, NotChecked=0, Total=1980 [2024-11-18 14:22:43,557 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:43,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 328 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:22:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-18 14:22:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2024-11-18 14:22:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:22:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-11-18 14:22:43,563 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 54 [2024-11-18 14:22:43,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:43,564 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-11-18 14:22:43,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.75) internal successors, (56), 23 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2024-11-18 14:22:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-11-18 14:22:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-18 14:22:43,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:43,564 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:43,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:22:43,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 14:22:43,766 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:43,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1194008948, now seen corresponding path program 3 times [2024-11-18 14:22:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:43,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815907089] [2024-11-18 14:22:43,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:22:43,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:43,777 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 14:22:43,777 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 14:22:44,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:44,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815907089] [2024-11-18 14:22:44,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815907089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:44,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015036880] [2024-11-18 14:22:44,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:22:44,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:44,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:44,248 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) [2024-11-18 14:22:44,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:22:44,291 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 14:22:44,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:44,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-18 14:22:44,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 14:22:44,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:22:45,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015036880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:45,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:45,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 27] total 46 [2024-11-18 14:22:45,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147109035] [2024-11-18 14:22:45,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:45,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-18 14:22:45,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:45,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-18 14:22:45,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1915, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 14:22:45,667 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 46 states, 45 states have (on average 1.6) internal successors, (72), 31 states have internal predecessors, (72), 11 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (21), 15 states have call predecessors, (21), 11 states have call successors, (21) [2024-11-18 14:22:46,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:46,402 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-11-18 14:22:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 14:22:46,403 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.6) internal successors, (72), 31 states have internal predecessors, (72), 11 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (21), 15 states have call predecessors, (21), 11 states have call successors, (21) Word has length 61 [2024-11-18 14:22:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:46,403 INFO L225 Difference]: With dead ends: 69 [2024-11-18 14:22:46,403 INFO L226 Difference]: Without dead ends: 65 [2024-11-18 14:22:46,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=290, Invalid=3250, Unknown=0, NotChecked=0, Total=3540 [2024-11-18 14:22:46,407 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:46,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 527 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:22:46,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-18 14:22:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 45. [2024-11-18 14:22:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 14:22:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2024-11-18 14:22:46,426 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 61 [2024-11-18 14:22:46,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:46,427 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2024-11-18 14:22:46,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.6) internal successors, (72), 31 states have internal predecessors, (72), 11 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (21), 15 states have call predecessors, (21), 11 states have call successors, (21) [2024-11-18 14:22:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2024-11-18 14:22:46,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 14:22:46,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:46,427 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:46,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 14:22:46,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:46,628 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:46,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:46,629 INFO L85 PathProgramCache]: Analyzing trace with hash 809184438, now seen corresponding path program 4 times [2024-11-18 14:22:46,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:46,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631633433] [2024-11-18 14:22:46,629 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:22:46,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:46,649 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:22:46,650 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-18 14:22:47,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:47,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631633433] [2024-11-18 14:22:47,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631633433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:47,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604647025] [2024-11-18 14:22:47,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:22:47,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:47,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:47,660 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) [2024-11-18 14:22:47,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:22:47,705 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:22:47,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:47,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-18 14:22:47,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-18 14:22:47,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 14:22:49,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604647025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:49,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:49,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 30] total 37 [2024-11-18 14:22:49,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042465222] [2024-11-18 14:22:49,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:49,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 14:22:49,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 14:22:49,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1216, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 14:22:49,399 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 37 states, 36 states have (on average 1.75) internal successors, (63), 26 states have internal predecessors, (63), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-18 14:22:49,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:49,958 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2024-11-18 14:22:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 14:22:49,959 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.75) internal successors, (63), 26 states have internal predecessors, (63), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) Word has length 68 [2024-11-18 14:22:49,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:49,960 INFO L225 Difference]: With dead ends: 75 [2024-11-18 14:22:49,960 INFO L226 Difference]: Without dead ends: 71 [2024-11-18 14:22:49,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 120 SyntacticMatches, 10 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=260, Invalid=2496, Unknown=0, NotChecked=0, Total=2756 [2024-11-18 14:22:49,961 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:49,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 459 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:22:49,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-18 14:22:49,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 48. [2024-11-18 14:22:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:22:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-11-18 14:22:49,973 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 68 [2024-11-18 14:22:49,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:49,973 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-11-18 14:22:49,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.75) internal successors, (63), 26 states have internal predecessors, (63), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-18 14:22:49,973 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-11-18 14:22:49,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 14:22:49,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:49,974 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:49,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 14:22:50,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:50,179 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:50,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:50,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1512865522, now seen corresponding path program 4 times [2024-11-18 14:22:50,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:50,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671623022] [2024-11-18 14:22:50,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:22:50,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:50,187 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:22:50,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-18 14:22:50,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671623022] [2024-11-18 14:22:50,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671623022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378520716] [2024-11-18 14:22:50,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:22:50,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:50,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:50,796 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) [2024-11-18 14:22:50,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:22:50,849 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:22:50,850 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:50,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-18 14:22:50,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-18 14:22:51,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 14:22:53,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378520716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:53,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:53,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26, 33] total 61 [2024-11-18 14:22:53,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586296777] [2024-11-18 14:22:53,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:53,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-18 14:22:53,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:53,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-18 14:22:53,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3441, Unknown=0, NotChecked=0, Total=3660 [2024-11-18 14:22:53,106 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 61 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 39 states have internal predecessors, (89), 13 states have call successors, (13), 1 states have call predecessors, (13), 21 states have return successors, (30), 22 states have call predecessors, (30), 13 states have call successors, (30) [2024-11-18 14:22:53,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:53,759 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2024-11-18 14:22:53,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-18 14:22:53,760 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 39 states have internal predecessors, (89), 13 states have call successors, (13), 1 states have call predecessors, (13), 21 states have return successors, (30), 22 states have call predecessors, (30), 13 states have call successors, (30) Word has length 75 [2024-11-18 14:22:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:53,761 INFO L225 Difference]: With dead ends: 81 [2024-11-18 14:22:53,761 INFO L226 Difference]: Without dead ends: 77 [2024-11-18 14:22:53,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=409, Invalid=5753, Unknown=0, NotChecked=0, Total=6162 [2024-11-18 14:22:53,763 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:53,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 488 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:22:53,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-18 14:22:53,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 51. [2024-11-18 14:22:53,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 14:22:53,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-18 14:22:53,771 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 75 [2024-11-18 14:22:53,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:53,771 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-18 14:22:53,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 39 states have internal predecessors, (89), 13 states have call successors, (13), 1 states have call predecessors, (13), 21 states have return successors, (30), 22 states have call predecessors, (30), 13 states have call successors, (30) [2024-11-18 14:22:53,771 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-18 14:22:53,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-18 14:22:53,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:53,772 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:53,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 14:22:53,976 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,SelfDestructingSolverStorable12 [2024-11-18 14:22:53,977 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:53,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:53,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1531804832, now seen corresponding path program 5 times [2024-11-18 14:22:53,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:53,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291461629] [2024-11-18 14:22:53,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:22:53,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:53,987 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 14:22:53,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-18 14:22:54,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:54,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291461629] [2024-11-18 14:22:54,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291461629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:54,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160023286] [2024-11-18 14:22:54,635 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:22:54,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:54,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:54,637 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) [2024-11-18 14:22:54,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:22:54,714 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 14:22:54,714 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:54,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-18 14:22:54,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-18 14:22:54,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 14:22:56,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160023286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:56,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:56,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 36] total 43 [2024-11-18 14:22:56,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794180465] [2024-11-18 14:22:56,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:56,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-18 14:22:56,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:56,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-18 14:22:56,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1668, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 14:22:56,669 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 43 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 30 states have internal predecessors, (73), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 13 states have call predecessors, (22), 14 states have call successors, (22) [2024-11-18 14:22:57,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:57,375 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2024-11-18 14:22:57,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 14:22:57,376 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 30 states have internal predecessors, (73), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 13 states have call predecessors, (22), 14 states have call successors, (22) Word has length 82 [2024-11-18 14:22:57,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:57,376 INFO L225 Difference]: With dead ends: 87 [2024-11-18 14:22:57,376 INFO L226 Difference]: Without dead ends: 83 [2024-11-18 14:22:57,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 147 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=338, Invalid=3568, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 14:22:57,378 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 76 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:57,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 501 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:22:57,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-18 14:22:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 54. [2024-11-18 14:22:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:22:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-18 14:22:57,386 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 82 [2024-11-18 14:22:57,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:57,387 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-18 14:22:57,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 30 states have internal predecessors, (73), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 13 states have call predecessors, (22), 14 states have call successors, (22) [2024-11-18 14:22:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-18 14:22:57,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-18 14:22:57,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:57,388 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:57,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:22:57,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 14:22:57,592 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:57,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1881963736, now seen corresponding path program 5 times [2024-11-18 14:22:57,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:57,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224077651] [2024-11-18 14:22:57,593 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:22:57,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:57,604 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 14:22:57,604 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-18 14:22:58,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:58,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224077651] [2024-11-18 14:22:58,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224077651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:58,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431900738] [2024-11-18 14:22:58,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:22:58,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:58,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:58,297 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) [2024-11-18 14:22:58,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:22:58,359 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 14:22:58,360 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:58,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-18 14:22:58,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-18 14:22:58,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:23:00,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431900738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:00,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:00,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30, 39] total 47 [2024-11-18 14:23:00,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528493497] [2024-11-18 14:23:00,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:00,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-18 14:23:00,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:00,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-18 14:23:00,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2008, Unknown=0, NotChecked=0, Total=2162 [2024-11-18 14:23:00,446 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 47 states, 46 states have (on average 1.6956521739130435) internal successors, (78), 32 states have internal predecessors, (78), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) [2024-11-18 14:23:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:01,219 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-11-18 14:23:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-18 14:23:01,220 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6956521739130435) internal successors, (78), 32 states have internal predecessors, (78), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) Word has length 89 [2024-11-18 14:23:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:01,221 INFO L225 Difference]: With dead ends: 93 [2024-11-18 14:23:01,221 INFO L226 Difference]: Without dead ends: 89 [2024-11-18 14:23:01,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=386, Invalid=4306, Unknown=0, NotChecked=0, Total=4692 [2024-11-18 14:23:01,222 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 26 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:01,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 554 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:23:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-18 14:23:01,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 57. [2024-11-18 14:23:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:23:01,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2024-11-18 14:23:01,233 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 89 [2024-11-18 14:23:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:01,233 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2024-11-18 14:23:01,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6956521739130435) internal successors, (78), 32 states have internal predecessors, (78), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) [2024-11-18 14:23:01,234 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2024-11-18 14:23:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 14:23:01,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:01,234 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:01,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 14:23:01,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 14:23:01,438 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:01,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:01,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1649915018, now seen corresponding path program 6 times [2024-11-18 14:23:01,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:01,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996098931] [2024-11-18 14:23:01,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:01,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:01,453 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-18 14:23:01,453 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-18 14:23:02,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:02,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996098931] [2024-11-18 14:23:02,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996098931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:02,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939268170] [2024-11-18 14:23:02,297 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:02,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:02,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:02,298 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:02,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:23:02,372 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-18 14:23:02,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:02,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-18 14:23:02,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-18 14:23:02,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:23:04,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939268170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:04,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:04,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 42] total 51 [2024-11-18 14:23:04,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539014454] [2024-11-18 14:23:04,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:04,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-18 14:23:04,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:04,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-18 14:23:04,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2379, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 14:23:04,744 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 51 states, 50 states have (on average 1.72) internal successors, (86), 35 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) [2024-11-18 14:23:05,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:05,571 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2024-11-18 14:23:05,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-18 14:23:05,571 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.72) internal successors, (86), 35 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) Word has length 96 [2024-11-18 14:23:05,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:05,572 INFO L225 Difference]: With dead ends: 99 [2024-11-18 14:23:05,572 INFO L226 Difference]: Without dead ends: 95 [2024-11-18 14:23:05,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=447, Invalid=5103, Unknown=0, NotChecked=0, Total=5550 [2024-11-18 14:23:05,574 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 48 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:05,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 674 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:23:05,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-18 14:23:05,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 60. [2024-11-18 14:23:05,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:23:05,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-11-18 14:23:05,584 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 96 [2024-11-18 14:23:05,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:05,585 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-11-18 14:23:05,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.72) internal successors, (86), 35 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) [2024-11-18 14:23:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-11-18 14:23:05,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 14:23:05,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:05,586 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:05,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 14:23:05,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 14:23:05,786 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:05,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1794979902, now seen corresponding path program 6 times [2024-11-18 14:23:05,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:05,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112436339] [2024-11-18 14:23:05,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:05,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:05,805 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-18 14:23:05,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2024-11-18 14:23:06,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:06,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112436339] [2024-11-18 14:23:06,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112436339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:06,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380684579] [2024-11-18 14:23:06,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:06,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:06,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:06,379 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:06,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:23:06,456 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-18 14:23:06,457 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:06,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-18 14:23:06,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-18 14:23:07,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:23:09,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380684579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:09,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:09,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 34, 45] total 63 [2024-11-18 14:23:09,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907618012] [2024-11-18 14:23:09,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:09,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-18 14:23:09,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:09,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-18 14:23:09,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=3644, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 14:23:09,597 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 63 states, 61 states have (on average 1.6229508196721312) internal successors, (99), 42 states have internal predecessors, (99), 18 states have call successors, (18), 1 states have call predecessors, (18), 19 states have return successors, (34), 21 states have call predecessors, (34), 18 states have call successors, (34) [2024-11-18 14:23:10,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:10,621 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2024-11-18 14:23:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-18 14:23:10,621 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 61 states have (on average 1.6229508196721312) internal successors, (99), 42 states have internal predecessors, (99), 18 states have call successors, (18), 1 states have call predecessors, (18), 19 states have return successors, (34), 21 states have call predecessors, (34), 18 states have call successors, (34) Word has length 103 [2024-11-18 14:23:10,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:10,622 INFO L225 Difference]: With dead ends: 112 [2024-11-18 14:23:10,622 INFO L226 Difference]: Without dead ends: 60 [2024-11-18 14:23:10,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2551 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=697, Invalid=8045, Unknown=0, NotChecked=0, Total=8742 [2024-11-18 14:23:10,624 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:10,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 755 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:23:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-18 14:23:10,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-18 14:23:10,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.024390243902439) internal successors, (42), 42 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:23:10,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-11-18 14:23:10,634 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 103 [2024-11-18 14:23:10,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:10,634 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-11-18 14:23:10,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 61 states have (on average 1.6229508196721312) internal successors, (99), 42 states have internal predecessors, (99), 18 states have call successors, (18), 1 states have call predecessors, (18), 19 states have return successors, (34), 21 states have call predecessors, (34), 18 states have call successors, (34) [2024-11-18 14:23:10,635 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-11-18 14:23:10,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-18 14:23:10,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:10,635 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:10,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 14:23:10,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 14:23:10,836 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:10,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:10,837 INFO L85 PathProgramCache]: Analyzing trace with hash 848388148, now seen corresponding path program 7 times [2024-11-18 14:23:10,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:10,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127967143] [2024-11-18 14:23:10,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:23:10,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-18 14:23:11,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:11,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127967143] [2024-11-18 14:23:11,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127967143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:11,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125830705] [2024-11-18 14:23:11,704 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:23:11,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:11,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:11,706 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:11,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:23:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:11,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-18 14:23:11,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-18 14:23:12,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-18 14:23:14,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125830705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:14,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:14,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 48] total 57 [2024-11-18 14:23:14,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543780743] [2024-11-18 14:23:14,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:14,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-18 14:23:14,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:14,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-18 14:23:14,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3000, Unknown=0, NotChecked=0, Total=3192 [2024-11-18 14:23:14,813 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 57 states, 55 states have (on average 1.709090909090909) internal successors, (94), 39 states have internal predecessors, (94), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) [2024-11-18 14:23:15,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:15,812 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2024-11-18 14:23:15,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-18 14:23:15,813 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 1.709090909090909) internal successors, (94), 39 states have internal predecessors, (94), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) Word has length 110 [2024-11-18 14:23:15,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:15,813 INFO L225 Difference]: With dead ends: 70 [2024-11-18 14:23:15,814 INFO L226 Difference]: Without dead ends: 66 [2024-11-18 14:23:15,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=528, Invalid=6612, Unknown=0, NotChecked=0, Total=7140 [2024-11-18 14:23:15,815 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 160 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:15,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 696 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:23:15,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-18 14:23:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-18 14:23:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 46 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:23:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2024-11-18 14:23:15,825 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 110 [2024-11-18 14:23:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:15,825 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2024-11-18 14:23:15,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 1.709090909090909) internal successors, (94), 39 states have internal predecessors, (94), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) [2024-11-18 14:23:15,825 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2024-11-18 14:23:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 14:23:15,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:15,826 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:15,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 14:23:16,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 14:23:16,030 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:16,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash 23995998, now seen corresponding path program 8 times [2024-11-18 14:23:16,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:16,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354610059] [2024-11-18 14:23:16,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:16,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:16,046 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:16,046 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-18 14:23:17,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:17,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354610059] [2024-11-18 14:23:17,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354610059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:17,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613743524] [2024-11-18 14:23:17,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:17,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:17,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:17,096 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:17,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:23:17,190 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:17,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:17,193 WARN L253 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-18 14:23:17,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-18 14:23:17,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-18 14:23:21,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613743524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:21,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 54] total 63 [2024-11-18 14:23:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212122718] [2024-11-18 14:23:21,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:21,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-18 14:23:21,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:21,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-18 14:23:21,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=3691, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 14:23:21,421 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 63 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 43 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (35), 20 states have call predecessors, (35), 20 states have call successors, (35) [2024-11-18 14:23:22,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:22,584 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2024-11-18 14:23:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-18 14:23:22,584 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 43 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (35), 20 states have call predecessors, (35), 20 states have call successors, (35) Word has length 124 [2024-11-18 14:23:22,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:22,586 INFO L225 Difference]: With dead ends: 76 [2024-11-18 14:23:22,586 INFO L226 Difference]: Without dead ends: 72 [2024-11-18 14:23:22,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=647, Invalid=8283, Unknown=0, NotChecked=0, Total=8930 [2024-11-18 14:23:22,591 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 116 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:22,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 921 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 14:23:22,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-18 14:23:22,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-18 14:23:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 50 states have internal predecessors, (50), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-18 14:23:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-11-18 14:23:22,613 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 124 [2024-11-18 14:23:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:22,614 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-11-18 14:23:22,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 43 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (35), 20 states have call predecessors, (35), 20 states have call successors, (35) [2024-11-18 14:23:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-11-18 14:23:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-18 14:23:22,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:22,616 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:22,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-18 14:23:22,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:22,816 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:22,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:22,817 INFO L85 PathProgramCache]: Analyzing trace with hash 128231176, now seen corresponding path program 9 times [2024-11-18 14:23:22,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:22,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368273413] [2024-11-18 14:23:22,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:23:22,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:22,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-18 14:23:22,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-18 14:23:24,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:24,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368273413] [2024-11-18 14:23:24,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368273413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:24,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703464650] [2024-11-18 14:23:24,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:23:24,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:24,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:24,261 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:24,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:23:24,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-18 14:23:24,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:24,372 WARN L253 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-11-18 14:23:24,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-18 14:23:24,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 14:23:28,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703464650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:28,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:28,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 60] total 69 [2024-11-18 14:23:28,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879596523] [2024-11-18 14:23:28,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:28,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-18 14:23:28,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:28,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-18 14:23:28,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=4455, Unknown=0, NotChecked=0, Total=4692 [2024-11-18 14:23:28,255 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 69 states, 68 states have (on average 1.7058823529411764) internal successors, (116), 47 states have internal predecessors, (116), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (39), 22 states have call predecessors, (39), 22 states have call successors, (39) [2024-11-18 14:23:29,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:29,694 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2024-11-18 14:23:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-18 14:23:29,695 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.7058823529411764) internal successors, (116), 47 states have internal predecessors, (116), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (39), 22 states have call predecessors, (39), 22 states have call successors, (39) Word has length 138 [2024-11-18 14:23:29,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:29,696 INFO L225 Difference]: With dead ends: 82 [2024-11-18 14:23:29,696 INFO L226 Difference]: Without dead ends: 78 [2024-11-18 14:23:29,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=759, Invalid=10161, Unknown=0, NotChecked=0, Total=10920 [2024-11-18 14:23:29,697 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 224 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:29,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1110 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 14:23:29,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-18 14:23:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-18 14:23:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 54 states have internal predecessors, (54), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 21 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-18 14:23:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2024-11-18 14:23:29,707 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 138 [2024-11-18 14:23:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:29,708 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2024-11-18 14:23:29,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 1.7058823529411764) internal successors, (116), 47 states have internal predecessors, (116), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (39), 22 states have call predecessors, (39), 22 states have call successors, (39) [2024-11-18 14:23:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2024-11-18 14:23:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-18 14:23:29,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:29,709 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:29,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 14:23:29,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:29,909 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:29,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1955824178, now seen corresponding path program 10 times [2024-11-18 14:23:29,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:29,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176953039] [2024-11-18 14:23:29,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:23:29,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:29,925 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:23:29,926 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-11-18 14:23:31,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:31,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176953039] [2024-11-18 14:23:31,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176953039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:31,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223563005] [2024-11-18 14:23:31,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:23:31,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:31,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:31,499 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:31,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 14:23:31,618 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:23:31,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:31,621 WARN L253 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 176 conjuncts are in the unsatisfiable core [2024-11-18 14:23:31,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-11-18 14:23:31,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 14:23:37,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223563005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:37,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:37,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 66] total 73 [2024-11-18 14:23:37,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604805057] [2024-11-18 14:23:37,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:37,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-18 14:23:37,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:37,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-18 14:23:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=5008, Unknown=0, NotChecked=0, Total=5256 [2024-11-18 14:23:37,499 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 73 states, 72 states have (on average 1.7083333333333333) internal successors, (123), 50 states have internal predecessors, (123), 24 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (42), 23 states have call predecessors, (42), 24 states have call successors, (42) [2024-11-18 14:23:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:39,355 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2024-11-18 14:23:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 14:23:39,356 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.7083333333333333) internal successors, (123), 50 states have internal predecessors, (123), 24 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (42), 23 states have call predecessors, (42), 24 states have call successors, (42) Word has length 152 [2024-11-18 14:23:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:39,357 INFO L225 Difference]: With dead ends: 88 [2024-11-18 14:23:39,357 INFO L226 Difference]: Without dead ends: 84 [2024-11-18 14:23:39,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 276 SyntacticMatches, 22 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=848, Invalid=11808, Unknown=0, NotChecked=0, Total=12656 [2024-11-18 14:23:39,358 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 204 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:39,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1101 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 14:23:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-18 14:23:39,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-18 14:23:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 58 states have internal predecessors, (58), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 23 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-18 14:23:39,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2024-11-18 14:23:39,368 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 152 [2024-11-18 14:23:39,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:39,369 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2024-11-18 14:23:39,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 1.7083333333333333) internal successors, (123), 50 states have internal predecessors, (123), 24 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (42), 23 states have call predecessors, (42), 24 states have call successors, (42) [2024-11-18 14:23:39,369 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2024-11-18 14:23:39,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-18 14:23:39,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:39,370 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:39,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 14:23:39,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:39,572 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:39,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:39,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1740548132, now seen corresponding path program 11 times [2024-11-18 14:23:39,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:39,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920134838] [2024-11-18 14:23:39,572 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:23:39,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:39,596 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-18 14:23:39,600 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2024-11-18 14:23:41,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:41,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920134838] [2024-11-18 14:23:41,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920134838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:41,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064254539] [2024-11-18 14:23:41,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:23:41,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:41,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:41,514 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:41,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 14:23:41,656 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-18 14:23:41,656 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:41,659 WARN L253 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-18 14:23:41,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2024-11-18 14:23:41,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 704 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-18 14:23:48,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064254539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:48,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:48,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 72] total 81 [2024-11-18 14:23:48,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278857760] [2024-11-18 14:23:48,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:48,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-18 14:23:48,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:48,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-18 14:23:48,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=6200, Unknown=0, NotChecked=0, Total=6480 [2024-11-18 14:23:48,258 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 81 states, 79 states have (on average 1.6962025316455696) internal successors, (134), 55 states have internal predecessors, (134), 27 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) [2024-11-18 14:23:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:50,495 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2024-11-18 14:23:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-18 14:23:50,495 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 79 states have (on average 1.6962025316455696) internal successors, (134), 55 states have internal predecessors, (134), 27 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) Word has length 166 [2024-11-18 14:23:50,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:50,496 INFO L225 Difference]: With dead ends: 94 [2024-11-18 14:23:50,496 INFO L226 Difference]: Without dead ends: 90 [2024-11-18 14:23:50,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=984, Invalid=14516, Unknown=0, NotChecked=0, Total=15500 [2024-11-18 14:23:50,498 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 224 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 2811 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:50,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1626 Invalid, 2899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2811 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 14:23:50,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-18 14:23:50,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-18 14:23:50,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 62 states have internal predecessors, (62), 3 states have call successors, (3), 2 states have call predecessors, (3), 25 states have return successors, (26), 25 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-18 14:23:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2024-11-18 14:23:50,510 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 166 [2024-11-18 14:23:50,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:50,510 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2024-11-18 14:23:50,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 79 states have (on average 1.6962025316455696) internal successors, (134), 55 states have internal predecessors, (134), 27 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) [2024-11-18 14:23:50,511 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2024-11-18 14:23:50,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-18 14:23:50,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:50,512 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:50,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 14:23:50,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:50,716 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:50,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1923299322, now seen corresponding path program 12 times [2024-11-18 14:23:50,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:50,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032457345] [2024-11-18 14:23:50,716 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:50,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:50,738 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-18 14:23:50,738 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-18 14:23:52,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:52,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032457345] [2024-11-18 14:23:52,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032457345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:52,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712596745] [2024-11-18 14:23:52,674 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:52,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:52,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:52,676 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:52,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 14:23:52,854 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-18 14:23:52,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:52,858 WARN L253 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 208 conjuncts are in the unsatisfiable core [2024-11-18 14:23:52,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-11-18 14:23:53,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-18 14:23:59,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712596745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:59,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:59,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 78] total 87 [2024-11-18 14:23:59,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382121663] [2024-11-18 14:23:59,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:59,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-11-18 14:23:59,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:59,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-11-18 14:23:59,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=7179, Unknown=0, NotChecked=0, Total=7482 [2024-11-18 14:23:59,664 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 87 states, 86 states have (on average 1.697674418604651) internal successors, (146), 59 states have internal predecessors, (146), 28 states have call successors, (28), 1 states have call predecessors, (28), 26 states have return successors, (51), 28 states have call predecessors, (51), 28 states have call successors, (51) [2024-11-18 14:24:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:02,221 INFO L93 Difference]: Finished difference Result 100 states and 101 transitions. [2024-11-18 14:24:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-18 14:24:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.697674418604651) internal successors, (146), 59 states have internal predecessors, (146), 28 states have call successors, (28), 1 states have call predecessors, (28), 26 states have return successors, (51), 28 states have call predecessors, (51), 28 states have call successors, (51) Word has length 180 [2024-11-18 14:24:02,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:02,222 INFO L225 Difference]: With dead ends: 100 [2024-11-18 14:24:02,222 INFO L226 Difference]: Without dead ends: 96 [2024-11-18 14:24:02,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1911 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1143, Invalid=16947, Unknown=0, NotChecked=0, Total=18090 [2024-11-18 14:24:02,224 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 412 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 3043 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:02,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1704 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3043 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 14:24:02,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-18 14:24:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-18 14:24:02,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 66 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 27 states have return successors, (28), 27 states have call predecessors, (28), 3 states have call successors, (28) [2024-11-18 14:24:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-11-18 14:24:02,235 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 180 [2024-11-18 14:24:02,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:02,236 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-11-18 14:24:02,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 1.697674418604651) internal successors, (146), 59 states have internal predecessors, (146), 28 states have call successors, (28), 1 states have call predecessors, (28), 26 states have return successors, (51), 28 states have call predecessors, (51), 28 states have call successors, (51) [2024-11-18 14:24:02,236 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-11-18 14:24:02,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-18 14:24:02,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:02,237 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:02,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-18 14:24:02,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:02,440 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:02,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1664905904, now seen corresponding path program 13 times [2024-11-18 14:24:02,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:02,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077976900] [2024-11-18 14:24:02,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:24:02,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:04,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2024-11-18 14:24:04,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:04,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077976900] [2024-11-18 14:24:04,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077976900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:04,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798411242] [2024-11-18 14:24:04,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:24:04,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:04,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:04,521 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:04,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 14:24:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:04,726 WARN L253 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 224 conjuncts are in the unsatisfiable core [2024-11-18 14:24:04,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2024-11-18 14:24:05,043 INFO L311 TraceCheckSpWp]: Computing backward predicates...