./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/gcd_4.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 679f2fe8d678884423b2dff47bf2c3c7ede0374b3a8bb68f9a9e8a332d8776ef --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:21:27,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:21:27,800 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:21:27,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:21:27,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:21:27,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:21:27,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:21:27,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:21:27,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:21:27,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:21:27,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:21:27,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:21:27,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:21:27,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:21:27,834 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:21:27,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:21:27,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:21:27,835 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:21:27,835 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:21:27,835 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:21:27,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:21:27,836 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:21:27,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:21:27,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:21:27,837 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:21:27,837 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:21:27,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:21:27,838 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:21:27,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:21:27,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:21:27,839 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:21:27,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:21:27,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:21:27,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:21:27,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:21:27,840 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:21:27,840 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:21:27,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:21:27,840 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:21:27,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:21:27,841 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:21:27,841 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:21:27,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 679f2fe8d678884423b2dff47bf2c3c7ede0374b3a8bb68f9a9e8a332d8776ef [2024-11-08 10:21:28,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:21:28,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:21:28,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:21:28,062 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:21:28,062 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:21:28,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_4.c [2024-11-08 10:21:29,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:21:29,519 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:21:29,520 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_4.c [2024-11-08 10:21:29,525 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8678fce/d63d4d91bc3c49de8a58904c77d976bf/FLAGc2bd0ca3e [2024-11-08 10:21:29,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8678fce/d63d4d91bc3c49de8a58904c77d976bf [2024-11-08 10:21:29,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:21:29,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:21:29,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:21:29,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:21:29,550 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:21:29,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,552 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd5b151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29, skipping insertion in model container [2024-11-08 10:21:29,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,566 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:21:29,703 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/bitvector/gcd_4.c[662,675] [2024-11-08 10:21:29,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:21:29,723 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:21:29,735 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/bitvector/gcd_4.c[662,675] [2024-11-08 10:21:29,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:21:29,753 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:21:29,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29 WrapperNode [2024-11-08 10:21:29,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:21:29,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:21:29,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:21:29,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:21:29,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,796 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2024-11-08 10:21:29,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:21:29,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:21:29,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:21:29,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:21:29,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,806 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,819 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-08 10:21:29,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:21:29,827 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:21:29,828 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:21:29,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:21:29,828 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (1/1) ... [2024-11-08 10:21:29,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:21:29,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:21:29,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 10:21:29,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 10:21:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:21:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:21:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 10:21:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:21:29,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:21:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 10:21:29,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 10:21:29,978 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:21:29,980 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:21:30,087 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-08 10:21:30,087 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:21:30,097 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:21:30,097 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 10:21:30,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:21:30 BoogieIcfgContainer [2024-11-08 10:21:30,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:21:30,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:21:30,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:21:30,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:21:30,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:21:29" (1/3) ... [2024-11-08 10:21:30,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3ee5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:21:30, skipping insertion in model container [2024-11-08 10:21:30,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:21:29" (2/3) ... [2024-11-08 10:21:30,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3ee5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:21:30, skipping insertion in model container [2024-11-08 10:21:30,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:21:30" (3/3) ... [2024-11-08 10:21:30,105 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2024-11-08 10:21:30,119 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:21:30,120 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:21:30,163 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:21:30,168 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;@6930f970, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:21:30,168 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:21:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:21:30,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 10:21:30,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:21:30,177 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:21:30,178 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:21:30,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:21:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash 705271831, now seen corresponding path program 1 times [2024-11-08 10:21:30,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:21:30,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869967718] [2024-11-08 10:21:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:21:30,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:21:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:21:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:30,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:21:30,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869967718] [2024-11-08 10:21:30,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869967718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:21:30,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:21:30,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:21:30,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090060974] [2024-11-08 10:21:30,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:21:30,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:21:30,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:21:30,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:21:30,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:21:30,443 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:21:30,470 INFO L93 Difference]: Finished difference Result 44 states and 65 transitions. [2024-11-08 10:21:30,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:21:30,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-08 10:21:30,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:21:30,486 INFO L225 Difference]: With dead ends: 44 [2024-11-08 10:21:30,486 INFO L226 Difference]: Without dead ends: 21 [2024-11-08 10:21:30,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:21:30,492 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:21:30,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 38 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:21:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-08 10:21:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2024-11-08 10:21:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:21:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-08 10:21:30,535 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-11-08 10:21:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:21:30,541 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-08 10:21:30,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-08 10:21:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 10:21:30,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:21:30,543 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:21:30,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:21:30,543 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:21:30,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:21:30,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2105475655, now seen corresponding path program 1 times [2024-11-08 10:21:30,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:21:30,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358646553] [2024-11-08 10:21:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:21:30,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:21:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:21:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:30,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:21:30,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358646553] [2024-11-08 10:21:30,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358646553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:21:30,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:21:30,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:21:30,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398802191] [2024-11-08 10:21:30,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:21:30,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:21:30,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:21:30,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:21:30,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:21:30,670 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:30,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:21:30,695 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2024-11-08 10:21:30,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:21:30,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-08 10:21:30,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:21:30,697 INFO L225 Difference]: With dead ends: 34 [2024-11-08 10:21:30,697 INFO L226 Difference]: Without dead ends: 20 [2024-11-08 10:21:30,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:21:30,698 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:21:30,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 29 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:21:30,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-08 10:21:30,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-08 10:21:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:21:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-08 10:21:30,707 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2024-11-08 10:21:30,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:21:30,708 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-08 10:21:30,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-08 10:21:30,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 10:21:30,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:21:30,709 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:21:30,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 10:21:30,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:21:30,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:21:30,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1540999076, now seen corresponding path program 1 times [2024-11-08 10:21:30,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:21:30,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355387159] [2024-11-08 10:21:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:21:30,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:21:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:21:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:30,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:21:30,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355387159] [2024-11-08 10:21:30,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355387159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:21:30,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:21:30,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:21:30,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058207945] [2024-11-08 10:21:30,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:21:30,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:21:30,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:21:30,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:21:30,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:21:30,830 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:30,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:21:30,852 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-11-08 10:21:30,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:21:30,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-08 10:21:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:21:30,854 INFO L225 Difference]: With dead ends: 35 [2024-11-08 10:21:30,854 INFO L226 Difference]: Without dead ends: 22 [2024-11-08 10:21:30,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:21:30,855 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:21:30,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:21:30,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-08 10:21:30,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-08 10:21:30,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:21:30,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-08 10:21:30,859 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2024-11-08 10:21:30,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:21:30,859 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-08 10:21:30,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:30,859 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-08 10:21:30,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 10:21:30,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:21:30,860 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:21:30,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 10:21:30,860 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:21:30,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:21:30,861 INFO L85 PathProgramCache]: Analyzing trace with hash -63151615, now seen corresponding path program 1 times [2024-11-08 10:21:30,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:21:30,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807258195] [2024-11-08 10:21:30,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:21:30,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:21:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:21:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:30,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:21:30,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807258195] [2024-11-08 10:21:30,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807258195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:21:30,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308262217] [2024-11-08 10:21:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:21:30,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:21:30,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:21:30,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:21:30,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:21:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:21:31,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 10:21:31,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:21:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:31,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:21:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:31,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308262217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:21:31,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:21:31,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-08 10:21:31,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529017294] [2024-11-08 10:21:31,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:21:31,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 10:21:31,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:21:31,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 10:21:31,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:21:31,210 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:21:31,250 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-11-08 10:21:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 10:21:31,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-08 10:21:31,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:21:31,251 INFO L225 Difference]: With dead ends: 39 [2024-11-08 10:21:31,251 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 10:21:31,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:21:31,253 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:21:31,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:21:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 10:21:31,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-08 10:21:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:21:31,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-08 10:21:31,257 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2024-11-08 10:21:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:21:31,258 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-08 10:21:31,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-08 10:21:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 10:21:31,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:21:31,259 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:21:31,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 10:21:31,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:21:31,461 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:21:31,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:21:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash 755367163, now seen corresponding path program 2 times [2024-11-08 10:21:31,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:21:31,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307021048] [2024-11-08 10:21:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:21:31,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:21:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:21:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:31,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:21:31,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307021048] [2024-11-08 10:21:31,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307021048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:21:31,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694909475] [2024-11-08 10:21:31,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:21:31,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:21:31,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:21:31,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:21:31,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:21:31,664 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:21:31,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:21:31,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 10:21:31,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:21:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:31,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:21:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:31,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694909475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:21:31,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:21:31,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-08 10:21:31,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329208450] [2024-11-08 10:21:31,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:21:31,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 10:21:31,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:21:31,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 10:21:31,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2024-11-08 10:21:31,847 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:21:31,952 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2024-11-08 10:21:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 10:21:31,953 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-08 10:21:31,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:21:31,955 INFO L225 Difference]: With dead ends: 47 [2024-11-08 10:21:31,955 INFO L226 Difference]: Without dead ends: 32 [2024-11-08 10:21:31,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2024-11-08 10:21:31,957 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:21:31,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 105 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:21:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-08 10:21:31,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-08 10:21:31,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:21:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2024-11-08 10:21:31,964 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 20 [2024-11-08 10:21:31,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:21:31,965 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2024-11-08 10:21:31,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2024-11-08 10:21:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 10:21:31,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:21:31,967 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:21:31,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 10:21:32,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:21:32,169 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:21:32,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:21:32,170 INFO L85 PathProgramCache]: Analyzing trace with hash 465797078, now seen corresponding path program 3 times [2024-11-08 10:21:32,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:21:32,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551770241] [2024-11-08 10:21:32,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:21:32,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:21:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 10:21:32,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412439210] [2024-11-08 10:21:32,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:21:32,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:21:32,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:21:32,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:21:32,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:21:32,223 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 10:21:32,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:21:32,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 10:21:32,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:21:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 10:21:32,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:21:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 10:21:32,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:21:32,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551770241] [2024-11-08 10:21:32,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 10:21:32,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412439210] [2024-11-08 10:21:32,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412439210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:21:32,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 10:21:32,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2024-11-08 10:21:32,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715052335] [2024-11-08 10:21:32,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 10:21:32,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 10:21:32,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:21:32,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 10:21:32,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-08 10:21:32,690 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 15 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:32,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:21:32,947 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2024-11-08 10:21:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 10:21:32,947 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 15 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-08 10:21:32,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:21:32,949 INFO L225 Difference]: With dead ends: 55 [2024-11-08 10:21:32,949 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 10:21:32,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-08 10:21:32,950 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:21:32,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 111 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:21:32,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 10:21:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2024-11-08 10:21:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 43 states have internal predecessors, (51), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 10:21:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2024-11-08 10:21:32,964 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 22 [2024-11-08 10:21:32,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:21:32,964 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2024-11-08 10:21:32,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 15 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:32,964 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2024-11-08 10:21:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-08 10:21:32,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:21:32,965 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:21:32,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 10:21:33,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:21:33,166 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:21:33,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:21:33,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1361819633, now seen corresponding path program 4 times [2024-11-08 10:21:33,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:21:33,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451991135] [2024-11-08 10:21:33,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:21:33,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:21:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:21:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:33,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:21:33,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451991135] [2024-11-08 10:21:33,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451991135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:21:33,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472768654] [2024-11-08 10:21:33,269 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:21:33,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:21:33,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:21:33,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:21:33,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:21:33,305 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:21:33,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:21:33,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 10:21:33,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:21:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:33,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:21:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:33,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472768654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:21:33,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:21:33,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2024-11-08 10:21:33,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739897360] [2024-11-08 10:21:33,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:21:33,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 10:21:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:21:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 10:21:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2024-11-08 10:21:33,527 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:33,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:21:33,623 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2024-11-08 10:21:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 10:21:33,624 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-08 10:21:33,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:21:33,626 INFO L225 Difference]: With dead ends: 73 [2024-11-08 10:21:33,626 INFO L226 Difference]: Without dead ends: 45 [2024-11-08 10:21:33,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2024-11-08 10:21:33,627 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:21:33,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 115 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:21:33,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-08 10:21:33,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-08 10:21:33,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 10:21:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2024-11-08 10:21:33,636 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2024-11-08 10:21:33,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:21:33,637 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2024-11-08 10:21:33,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2024-11-08 10:21:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 10:21:33,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:21:33,638 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:21:33,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 10:21:33,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:21:33,842 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:21:33,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:21:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash -13479749, now seen corresponding path program 1 times [2024-11-08 10:21:33,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:21:33,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571742487] [2024-11-08 10:21:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:21:33,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:21:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 10:21:33,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563334648] [2024-11-08 10:21:33,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:21:33,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:21:33,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:21:33,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:21:33,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:21:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:21:33,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 10:21:33,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:21:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:21:34,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:21:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:21:34,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:21:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571742487] [2024-11-08 10:21:34,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 10:21:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563334648] [2024-11-08 10:21:34,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563334648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:21:34,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 10:21:34,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2024-11-08 10:21:34,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536059397] [2024-11-08 10:21:34,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 10:21:34,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 10:21:34,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:21:34,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 10:21:34,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-08 10:21:34,274 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 16 states, 14 states have (on average 2.642857142857143) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:21:34,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:21:34,402 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2024-11-08 10:21:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 10:21:34,403 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.642857142857143) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-08 10:21:34,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:21:34,404 INFO L225 Difference]: With dead ends: 51 [2024-11-08 10:21:34,404 INFO L226 Difference]: Without dead ends: 40 [2024-11-08 10:21:34,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-08 10:21:34,404 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:21:34,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 116 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:21:34,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-08 10:21:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-08 10:21:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:21:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-11-08 10:21:34,408 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 27 [2024-11-08 10:21:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:21:34,409 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-11-08 10:21:34,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.642857142857143) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:21:34,409 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-11-08 10:21:34,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 10:21:34,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:21:34,409 INFO L215 NwaCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:21:34,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 10:21:34,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:21:34,611 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:21:34,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:21:34,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1107096946, now seen corresponding path program 5 times [2024-11-08 10:21:34,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:21:34,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749688842] [2024-11-08 10:21:34,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:21:34,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:21:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:21:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:21:34,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:21:34,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749688842] [2024-11-08 10:21:34,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749688842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:21:34,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903625173] [2024-11-08 10:21:34,675 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:21:34,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:21:34,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:21:34,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:21:34,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:21:34,714 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-08 10:21:34,714 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:21:34,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 10:21:34,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:21:34,840 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:34,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:21:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:21:34,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903625173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:21:34,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:21:34,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 23 [2024-11-08 10:21:34,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536327621] [2024-11-08 10:21:34,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:21:34,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 10:21:34,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:21:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 10:21:34,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2024-11-08 10:21:34,983 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:35,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:21:35,042 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-11-08 10:21:35,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 10:21:35,043 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-08 10:21:35,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:21:35,044 INFO L225 Difference]: With dead ends: 40 [2024-11-08 10:21:35,044 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 10:21:35,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2024-11-08 10:21:35,045 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:21:35,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:21:35,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 10:21:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 10:21:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 10:21:35,046 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2024-11-08 10:21:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:21:35,046 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 10:21:35,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:21:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 10:21:35,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 10:21:35,050 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 10:21:35,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 10:21:35,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:21:35,257 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1] [2024-11-08 10:21:35,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-08 10:21:35,364 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 10:21:35,378 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~x~0 [2024-11-08 10:21:35,380 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~y~0 [2024-11-08 10:21:35,380 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~x~0 [2024-11-08 10:21:35,381 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~y~0 [2024-11-08 10:21:35,381 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~x~0 [2024-11-08 10:21:35,381 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~y~0 [2024-11-08 10:21:35,385 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~x~0 [2024-11-08 10:21:35,386 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~y~0 [2024-11-08 10:21:35,387 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~x~0 [2024-11-08 10:21:35,387 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~y~0 [2024-11-08 10:21:35,387 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~x~0 [2024-11-08 10:21:35,389 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~y~0 [2024-11-08 10:21:35,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 10:21:35 BoogieIcfgContainer [2024-11-08 10:21:35,400 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 10:21:35,401 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 10:21:35,401 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 10:21:35,402 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 10:21:35,402 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:21:30" (3/4) ... [2024-11-08 10:21:35,404 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 10:21:35,407 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-08 10:21:35,410 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-08 10:21:35,411 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-08 10:21:35,412 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-08 10:21:35,412 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 10:21:35,413 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 10:21:35,484 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-08 10:21:35,485 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-08 10:21:35,485 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 10:21:35,486 INFO L158 Benchmark]: Toolchain (without parser) took 5941.27ms. Allocated memory was 176.2MB in the beginning and 297.8MB in the end (delta: 121.6MB). Free memory was 102.5MB in the beginning and 229.9MB in the end (delta: -127.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 10:21:35,486 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 176.2MB. Free memory was 128.8MB in the beginning and 128.6MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 10:21:35,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.49ms. Allocated memory is still 176.2MB. Free memory was 102.4MB in the beginning and 89.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 10:21:35,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.87ms. Allocated memory is still 176.2MB. Free memory was 89.9MB in the beginning and 145.1MB in the end (delta: -55.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2024-11-08 10:21:35,487 INFO L158 Benchmark]: Boogie Preprocessor took 30.51ms. Allocated memory is still 176.2MB. Free memory was 145.1MB in the beginning and 143.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 10:21:35,487 INFO L158 Benchmark]: RCFGBuilder took 270.40ms. Allocated memory was 176.2MB in the beginning and 247.5MB in the end (delta: 71.3MB). Free memory was 143.3MB in the beginning and 207.6MB in the end (delta: -64.3MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2024-11-08 10:21:35,487 INFO L158 Benchmark]: TraceAbstraction took 5301.18ms. Allocated memory was 247.5MB in the beginning and 297.8MB in the end (delta: 50.3MB). Free memory was 207.6MB in the beginning and 235.1MB in the end (delta: -27.5MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2024-11-08 10:21:35,487 INFO L158 Benchmark]: Witness Printer took 83.70ms. Allocated memory is still 297.8MB. Free memory was 235.1MB in the beginning and 229.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-08 10:21:35,489 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 176.2MB. Free memory was 128.8MB in the beginning and 128.6MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.49ms. Allocated memory is still 176.2MB. Free memory was 102.4MB in the beginning and 89.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.87ms. Allocated memory is still 176.2MB. Free memory was 89.9MB in the beginning and 145.1MB in the end (delta: -55.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.51ms. Allocated memory is still 176.2MB. Free memory was 145.1MB in the beginning and 143.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.40ms. Allocated memory was 176.2MB in the beginning and 247.5MB in the end (delta: 71.3MB). Free memory was 143.3MB in the beginning and 207.6MB in the end (delta: -64.3MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5301.18ms. Allocated memory was 247.5MB in the beginning and 297.8MB in the end (delta: 50.3MB). Free memory was 207.6MB in the beginning and 235.1MB in the end (delta: -27.5MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * Witness Printer took 83.70ms. Allocated memory is still 297.8MB. Free memory was 235.1MB in the beginning and 229.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~x~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~y~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~x~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~y~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~x~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~y~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~x~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~y~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~x~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~y~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~x~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~y~0 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 616 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 490 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 793 IncrementalHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 126 mSDtfsCounter, 793 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 305 GetRequests, 195 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=6, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 306 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 373 ConstructedInterpolants, 0 QuantifiedInterpolants, 1932 SizeOfPredicates, 18 NumberOfNonLiveVariables, 531 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 112/420 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((((((a == 27) && (b == 18)) || ((a == 45) && (b == 18))) || ((b == 0) && (a == 9))) || ((((((long long) b + 1) <= ((long long) a * 3)) && (((long long) b + 1) <= 0)) && (((long long) b + 9) <= ((long long) a * 2))) && (((long long) b + 9) <= a))) || ((a == 9) && (b == 18))) || ((a == 9) && (b == 9))) || ((a == 63) && (b == 18))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-08 10:21:35,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE