./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-2.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 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 20:40:34,733 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 20:40:34,808 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 20:40:34,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 20:40:34,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 20:40:34,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 20:40:34,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 20:40:34,846 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 20:40:34,846 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 20:40:34,848 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 20:40:34,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 20:40:34,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 20:40:34,850 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 20:40:34,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 20:40:34,850 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 20:40:34,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 20:40:34,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 20:40:34,851 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 20:40:34,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 20:40:34,852 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 20:40:34,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 20:40:34,858 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 20:40:34,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 20:40:34,859 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 20:40:34,859 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 20:40:34,859 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 20:40:34,860 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 20:40:34,860 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 20:40:34,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 20:40:34,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 20:40:34,861 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 20:40:34,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 20:40:34,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 20:40:34,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 20:40:34,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 20:40:34,862 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 20:40:34,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 20:40:34,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 20:40:34,863 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 20:40:34,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 20:40:34,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 20:40:34,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 20:40:34,864 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 [2024-11-19 20:40:35,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 20:40:35,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 20:40:35,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 20:40:35,143 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 20:40:35,144 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 20:40:35,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-2.c [2024-11-19 20:40:36,589 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 20:40:36,776 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 20:40:36,777 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-2.c [2024-11-19 20:40:36,785 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b24d54a50/cd117188b3fb42fdb275b92b7918ccc8/FLAG518297f0b [2024-11-19 20:40:37,173 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b24d54a50/cd117188b3fb42fdb275b92b7918ccc8 [2024-11-19 20:40:37,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 20:40:37,177 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 20:40:37,178 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 20:40:37,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 20:40:37,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 20:40:37,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f390e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37, skipping insertion in model container [2024-11-19 20:40:37,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,204 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 20:40:37,408 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/ldv-regression/test23-2.c[1070,1083] [2024-11-19 20:40:37,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 20:40:37,423 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 20:40:37,439 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/ldv-regression/test23-2.c[1070,1083] [2024-11-19 20:40:37,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 20:40:37,459 INFO L204 MainTranslator]: Completed translation [2024-11-19 20:40:37,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37 WrapperNode [2024-11-19 20:40:37,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 20:40:37,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 20:40:37,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 20:40:37,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 20:40:37,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,502 INFO L138 Inliner]: procedures = 16, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2024-11-19 20:40:37,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 20:40:37,503 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 20:40:37,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 20:40:37,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 20:40:37,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,525 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,544 INFO L175 MemorySlicer]: Split 46 memory accesses to 2 slices as follows [2, 44]. 96 percent of accesses are in the largest equivalence class. The 38 initializations are split as follows [2, 36]. The 5 writes are split as follows [0, 5]. [2024-11-19 20:40:37,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 20:40:37,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 20:40:37,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 20:40:37,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 20:40:37,560 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (1/1) ... [2024-11-19 20:40:37,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 20:40:37,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:40:37,597 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) [2024-11-19 20:40:37,605 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 [2024-11-19 20:40:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 20:40:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 20:40:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 20:40:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 20:40:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 20:40:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2024-11-19 20:40:37,644 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2024-11-19 20:40:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 20:40:37,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 20:40:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 20:40:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 20:40:37,712 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 20:40:37,714 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 20:40:37,874 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-19 20:40:37,874 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 20:40:37,893 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 20:40:37,894 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 20:40:37,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:40:37 BoogieIcfgContainer [2024-11-19 20:40:37,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 20:40:37,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 20:40:37,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 20:40:37,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 20:40:37,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:40:37" (1/3) ... [2024-11-19 20:40:37,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc3c600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:40:37, skipping insertion in model container [2024-11-19 20:40:37,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:40:37" (2/3) ... [2024-11-19 20:40:37,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc3c600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:40:37, skipping insertion in model container [2024-11-19 20:40:37,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:40:37" (3/3) ... [2024-11-19 20:40:37,904 INFO L112 eAbstractionObserver]: Analyzing ICFG test23-2.c [2024-11-19 20:40:37,920 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 20:40:37,920 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 20:40:37,970 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 20:40:37,976 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;@45c2a6c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 20:40:37,977 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 20:40:37,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 20:40:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 20:40:37,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:40:37,987 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:40:37,987 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:40:37,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:40:37,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1478003781, now seen corresponding path program 1 times [2024-11-19 20:40:38,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:40:38,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629758721] [2024-11-19 20:40:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:40:38,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:40:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:38,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 20:40:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:38,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 20:40:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 20:40:38,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:40:38,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629758721] [2024-11-19 20:40:38,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629758721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:40:38,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 20:40:38,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 20:40:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804068735] [2024-11-19 20:40:38,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:40:38,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 20:40:38,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:40:38,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 20:40:38,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 20:40:38,349 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 20:40:38,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:40:38,360 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-11-19 20:40:38,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 20:40:38,362 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-19 20:40:38,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:40:38,367 INFO L225 Difference]: With dead ends: 31 [2024-11-19 20:40:38,367 INFO L226 Difference]: Without dead ends: 18 [2024-11-19 20:40:38,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 20:40:38,372 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 20:40:38,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 20:40:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-19 20:40:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-19 20:40:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 20:40:38,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-19 20:40:38,412 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 19 [2024-11-19 20:40:38,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:40:38,414 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-19 20:40:38,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 20:40:38,414 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-19 20:40:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 20:40:38,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:40:38,416 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:40:38,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 20:40:38,416 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:40:38,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:40:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1220515189, now seen corresponding path program 1 times [2024-11-19 20:40:38,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:40:38,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096575525] [2024-11-19 20:40:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:40:38,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:40:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:40,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 20:40:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:40,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 20:40:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 20:40:40,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:40:40,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096575525] [2024-11-19 20:40:40,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096575525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:40:40,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 20:40:40,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 20:40:40,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193564815] [2024-11-19 20:40:40,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:40:40,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 20:40:40,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:40:40,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 20:40:40,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 20:40:40,675 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 20:40:40,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:40:40,861 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-19 20:40:40,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 20:40:40,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-19 20:40:40,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:40:40,862 INFO L225 Difference]: With dead ends: 25 [2024-11-19 20:40:40,862 INFO L226 Difference]: Without dead ends: 20 [2024-11-19 20:40:40,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-19 20:40:40,864 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 20:40:40,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 63 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 20:40:40,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-19 20:40:40,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-19 20:40:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 20:40:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-19 20:40:40,870 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 20 [2024-11-19 20:40:40,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:40:40,870 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-19 20:40:40,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 20:40:40,871 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-19 20:40:40,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 20:40:40,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:40:40,871 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:40:40,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 20:40:40,872 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:40:40,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:40:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1898823162, now seen corresponding path program 1 times [2024-11-19 20:40:40,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:40:40,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398819703] [2024-11-19 20:40:40,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:40:40,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:40:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:42,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 20:40:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:42,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 20:40:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 20:40:42,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:40:42,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398819703] [2024-11-19 20:40:42,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398819703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:40:42,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382236183] [2024-11-19 20:40:42,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:40:42,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:40:42,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:40:42,093 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) [2024-11-19 20:40:42,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 20:40:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:42,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 20:40:42,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:40:42,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2024-11-19 20:40:42,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 20:40:42,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 12 [2024-11-19 20:40:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 20:40:42,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 20:40:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 20:40:42,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382236183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 20:40:42,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 20:40:42,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2024-11-19 20:40:42,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705373489] [2024-11-19 20:40:42,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 20:40:42,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 20:40:42,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:40:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 20:40:42,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-19 20:40:42,470 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 20:40:42,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:40:42,831 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-11-19 20:40:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 20:40:42,832 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 22 [2024-11-19 20:40:42,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:40:42,833 INFO L225 Difference]: With dead ends: 31 [2024-11-19 20:40:42,833 INFO L226 Difference]: Without dead ends: 26 [2024-11-19 20:40:42,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2024-11-19 20:40:42,835 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 20:40:42,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 79 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 20:40:42,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-19 20:40:42,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-19 20:40:42,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 20:40:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2024-11-19 20:40:42,845 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2024-11-19 20:40:42,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:40:42,845 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2024-11-19 20:40:42,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 20:40:42,846 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2024-11-19 20:40:42,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 20:40:42,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:40:42,847 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:40:42,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 20:40:43,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:40:43,052 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:40:43,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:40:43,052 INFO L85 PathProgramCache]: Analyzing trace with hash -974313463, now seen corresponding path program 2 times [2024-11-19 20:40:43,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:40:43,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657664627] [2024-11-19 20:40:43,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:40:43,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:40:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:44,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 20:40:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:44,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 20:40:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 20:40:44,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:40:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657664627] [2024-11-19 20:40:44,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657664627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:40:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527875911] [2024-11-19 20:40:44,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 20:40:44,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:40:44,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:40:44,697 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) [2024-11-19 20:40:44,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 20:40:44,784 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 20:40:44,785 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 20:40:44,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 20:40:44,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:40:44,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 85 [2024-11-19 20:40:44,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2024-11-19 20:40:44,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 148 [2024-11-19 20:40:44,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 93 [2024-11-19 20:40:55,037 INFO L349 Elim1Store]: treesize reduction 15, result has 65.9 percent of original size [2024-11-19 20:40:55,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 107 [2024-11-19 20:40:55,196 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 20:40:55,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 20:40:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 20:40:55,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527875911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 20:40:55,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 20:40:55,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 24 [2024-11-19 20:40:55,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248074562] [2024-11-19 20:40:55,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 20:40:55,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 20:40:55,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:40:55,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 20:40:55,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=446, Unknown=2, NotChecked=0, Total=552 [2024-11-19 20:40:55,611 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 20:40:57,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:40:57,502 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-19 20:40:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 20:40:57,504 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-19 20:40:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:40:57,505 INFO L225 Difference]: With dead ends: 43 [2024-11-19 20:40:57,505 INFO L226 Difference]: Without dead ends: 38 [2024-11-19 20:40:57,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=479, Invalid=1681, Unknown=2, NotChecked=0, Total=2162 [2024-11-19 20:40:57,507 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 20:40:57,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 123 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 20:40:57,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-19 20:40:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-19 20:40:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 20:40:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2024-11-19 20:40:57,524 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 28 [2024-11-19 20:40:57,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:40:57,524 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2024-11-19 20:40:57,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 20:40:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2024-11-19 20:40:57,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-19 20:40:57,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:40:57,526 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:40:57,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 20:40:57,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-19 20:40:57,729 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:40:57,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:40:57,729 INFO L85 PathProgramCache]: Analyzing trace with hash 638604903, now seen corresponding path program 3 times [2024-11-19 20:40:57,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:40:57,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949352220] [2024-11-19 20:40:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:40:57,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:40:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:59,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 20:40:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:59,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 20:40:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:40:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 20:40:59,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:40:59,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949352220] [2024-11-19 20:40:59,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949352220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:40:59,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451284258] [2024-11-19 20:40:59,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 20:40:59,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:40:59,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:40:59,664 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) [2024-11-19 20:40:59,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 20:40:59,781 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 20:40:59,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 20:40:59,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 20:40:59,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:40:59,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-19 20:41:04,852 INFO L349 Elim1Store]: treesize reduction 78, result has 48.3 percent of original size [2024-11-19 20:41:04,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 162 treesize of output 150 [2024-11-19 20:41:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-19 20:41:05,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 20:41:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-19 20:41:05,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451284258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 20:41:05,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 20:41:05,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 29 [2024-11-19 20:41:05,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571352536] [2024-11-19 20:41:05,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 20:41:05,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 20:41:05,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:41:05,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 20:41:05,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=737, Unknown=1, NotChecked=0, Total=812 [2024-11-19 20:41:05,474 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 29 states, 29 states have (on average 2.0) internal successors, (58), 29 states have internal predecessors, (58), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 20:41:11,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 20:41:23,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 20:41:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:41:36,200 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-11-19 20:41:36,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 20:41:36,200 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0) internal successors, (58), 29 states have internal predecessors, (58), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2024-11-19 20:41:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:41:36,200 INFO L225 Difference]: With dead ends: 40 [2024-11-19 20:41:36,201 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 20:41:36,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=382, Invalid=2692, Unknown=6, NotChecked=0, Total=3080 [2024-11-19 20:41:36,203 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 60 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-19 20:41:36,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 152 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 479 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2024-11-19 20:41:36,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 20:41:36,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 20:41:36,204 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) [2024-11-19 20:41:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 20:41:36,204 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2024-11-19 20:41:36,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:41:36,204 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 20:41:36,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0) internal successors, (58), 29 states have internal predecessors, (58), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 20:41:36,204 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 20:41:36,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 20:41:36,207 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-19 20:41:36,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 20:41:36,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:36,415 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-19 20:41:36,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-19 20:41:36,639 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 20:41:36,649 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#d2~0!offset [2024-11-19 20:41:36,652 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 20:41:36,652 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 20:41:36,652 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~pd2~0!base,]]] [2024-11-19 20:41:36,652 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pd2~0!offset [2024-11-19 20:41:36,652 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pa~0!offset [2024-11-19 20:41:36,652 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pd2~0!offset [2024-11-19 20:41:36,652 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pa~0!offset [2024-11-19 20:41:36,653 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#d1~0!offset [2024-11-19 20:41:36,653 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pa~0!base [2024-11-19 20:41:36,653 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pd2~0!base [2024-11-19 20:41:36,653 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pd1~0!offset [2024-11-19 20:41:36,653 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pd2~0!offset [2024-11-19 20:41:36,653 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pd1~0!offset [2024-11-19 20:41:36,653 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 20:41:36,653 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 20:41:36,654 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~pa~0!base,]]] [2024-11-19 20:41:36,657 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#d2~0!offset [2024-11-19 20:41:36,657 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#d1~0!offset [2024-11-19 20:41:36,658 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#d2~0!offset [2024-11-19 20:41:36,658 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #res!offset [2024-11-19 20:41:36,658 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#d1~0!offset [2024-11-19 20:41:36,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:41:36 BoogieIcfgContainer [2024-11-19 20:41:36,663 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 20:41:36,663 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 20:41:36,663 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 20:41:36,663 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 20:41:36,664 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:40:37" (3/4) ... [2024-11-19 20:41:36,666 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 20:41:36,669 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2024-11-19 20:41:36,675 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-19 20:41:36,675 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-19 20:41:36,675 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 20:41:36,675 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 20:41:36,771 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 20:41:36,771 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 20:41:36,773 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 20:41:36,774 INFO L158 Benchmark]: Toolchain (without parser) took 59597.42ms. Allocated memory was 161.5MB in the beginning and 377.5MB in the end (delta: 216.0MB). Free memory was 107.3MB in the beginning and 132.2MB in the end (delta: -24.8MB). Peak memory consumption was 194.3MB. Max. memory is 16.1GB. [2024-11-19 20:41:36,774 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 161.5MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 20:41:36,774 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.91ms. Allocated memory is still 161.5MB. Free memory was 107.3MB in the beginning and 93.9MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-19 20:41:36,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.89ms. Allocated memory is still 161.5MB. Free memory was 93.9MB in the beginning and 91.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 20:41:36,775 INFO L158 Benchmark]: Boogie Preprocessor took 53.06ms. Allocated memory is still 161.5MB. Free memory was 91.8MB in the beginning and 89.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 20:41:36,775 INFO L158 Benchmark]: RCFGBuilder took 337.94ms. Allocated memory is still 161.5MB. Free memory was 89.7MB in the beginning and 75.4MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-19 20:41:36,775 INFO L158 Benchmark]: TraceAbstraction took 58765.49ms. Allocated memory was 161.5MB in the beginning and 377.5MB in the end (delta: 216.0MB). Free memory was 74.6MB in the beginning and 137.4MB in the end (delta: -62.8MB). Peak memory consumption was 154.5MB. Max. memory is 16.1GB. [2024-11-19 20:41:36,775 INFO L158 Benchmark]: Witness Printer took 110.41ms. Allocated memory is still 377.5MB. Free memory was 137.4MB in the beginning and 132.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-19 20:41:36,777 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 161.5MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.91ms. Allocated memory is still 161.5MB. Free memory was 107.3MB in the beginning and 93.9MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.89ms. Allocated memory is still 161.5MB. Free memory was 93.9MB in the beginning and 91.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.06ms. Allocated memory is still 161.5MB. Free memory was 91.8MB in the beginning and 89.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 337.94ms. Allocated memory is still 161.5MB. Free memory was 89.7MB in the beginning and 75.4MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 58765.49ms. Allocated memory was 161.5MB in the beginning and 377.5MB in the end (delta: 216.0MB). Free memory was 74.6MB in the beginning and 137.4MB in the end (delta: -62.8MB). Peak memory consumption was 154.5MB. Max. memory is 16.1GB. * Witness Printer took 110.41ms. Allocated memory is still 377.5MB. Free memory was 137.4MB in the beginning and 132.2MB 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: ~#d2~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~pd2~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pd2~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pa~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pd2~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pa~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#d1~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pa~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pd2~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pd1~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pd2~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pd1~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~pa~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#d2~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#d1~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#d2~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #res!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#d1~0!offset * 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: 52]: 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: 58.5s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 33.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 152 SdHoareTripleChecker+Valid, 9.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 149 mSDsluCounter, 441 SdHoareTripleChecker+Invalid, 8.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 369 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 702 IncrementalHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 72 mSDtfsCounter, 702 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 310 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 39.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=4, InterpolantAutomatonStates: 80, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 23.5s InterpolantComputationTime, 219 NumberOfCodeBlocks, 203 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 298 ConstructedInterpolants, 12 QuantifiedInterpolants, 4211 SizeOfPredicates, 31 NumberOfNonLiveVariables, 653 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 214/429 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: 42]: Loop Invariant Derived loop invariant: null - ProcedureContractResult [Line: 23]: Procedure Contract for get_dummy Derived contract for procedure get_dummy. Ensures: ((d1 == \old(d1)) && (d2 == \old(d2))) RESULT: Ultimate proved your program to be correct! [2024-11-19 20:41:36,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE