./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.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 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:38:38,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:38:38,242 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:38:38,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:38:38,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:38:38,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:38:38,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:38:38,292 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:38:38,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:38:38,293 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:38:38,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:38:38,293 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:38:38,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:38:38,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:38:38,296 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:38:38,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:38:38,297 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:38:38,297 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:38:38,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:38:38,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:38:38,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:38:38,298 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:38:38,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:38:38,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:38:38,299 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:38:38,299 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:38:38,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:38:38,300 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:38:38,300 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:38:38,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:38:38,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:38:38,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:38:38,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:38:38,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:38:38,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:38:38,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:38:38,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:38:38,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:38:38,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:38:38,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:38:38,303 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:38:38,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:38:38,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f [2024-11-22 01:38:38,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:38:38,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:38:38,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:38:38,525 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:38:38,525 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:38:38,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c [2024-11-22 01:38:39,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:38:40,154 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:38:40,155 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c [2024-11-22 01:38:40,161 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e82b52f9a/d5a2ca0dc8e64d01b37a5635c0ed0a2a/FLAGc92938397 [2024-11-22 01:38:40,554 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e82b52f9a/d5a2ca0dc8e64d01b37a5635c0ed0a2a [2024-11-22 01:38:40,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:38:40,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:38:40,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:38:40,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:38:40,567 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:38:40,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff8ef9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40, skipping insertion in model container [2024-11-22 01:38:40,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,605 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:38:40,826 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/nla-digbench-scaling/ps4-ll_valuebound10.c[458,471] [2024-11-22 01:38:40,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:38:40,846 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:38:40,873 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/nla-digbench-scaling/ps4-ll_valuebound10.c[458,471] [2024-11-22 01:38:40,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:38:40,893 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:38:40,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40 WrapperNode [2024-11-22 01:38:40,893 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:38:40,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:38:40,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:38:40,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:38:40,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,918 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2024-11-22 01:38:40,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:38:40,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:38:40,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:38:40,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:38:40,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,928 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,945 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 01:38:40,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,950 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:38:40,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:38:40,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:38:40,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:38:40,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (1/1) ... [2024-11-22 01:38:40,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:38:40,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:38:40,978 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) [2024-11-22 01:38:40,982 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 [2024-11-22 01:38:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:38:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:38:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:38:41,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:38:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 01:38:41,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 01:38:41,058 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:38:41,059 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:38:41,147 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-22 01:38:41,147 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:38:41,158 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:38:41,159 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 01:38:41,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:38:41 BoogieIcfgContainer [2024-11-22 01:38:41,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:38:41,161 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:38:41,162 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:38:41,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:38:41,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:38:40" (1/3) ... [2024-11-22 01:38:41,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4228a38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:38:41, skipping insertion in model container [2024-11-22 01:38:41,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:40" (2/3) ... [2024-11-22 01:38:41,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4228a38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:38:41, skipping insertion in model container [2024-11-22 01:38:41,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:38:41" (3/3) ... [2024-11-22 01:38:41,168 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound10.c [2024-11-22 01:38:41,182 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:38:41,182 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:38:41,232 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:38:41,237 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;@5272cdf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:38:41,238 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:38:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2024-11-22 01:38:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 01:38:41,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:38:41,247 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:38:41,247 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:38:41,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:38:41,251 INFO L85 PathProgramCache]: Analyzing trace with hash -589436290, now seen corresponding path program 1 times [2024-11-22 01:38:41,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:38:41,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958968113] [2024-11-22 01:38:41,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:38:41,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:38:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:38:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:38:41,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:38:41,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958968113] [2024-11-22 01:38:41,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958968113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:38:41,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:38:41,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 01:38:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010061049] [2024-11-22 01:38:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:38:41,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 01:38:41,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:38:41,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 01:38:41,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:38:41,401 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-22 01:38:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:38:41,415 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2024-11-22 01:38:41,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 01:38:41,417 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2024-11-22 01:38:41,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:38:41,422 INFO L225 Difference]: With dead ends: 35 [2024-11-22 01:38:41,422 INFO L226 Difference]: Without dead ends: 15 [2024-11-22 01:38:41,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:38:41,427 INFO L432 NwaCegarLoop]: 21 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, 21 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 [2024-11-22 01:38:41,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:38:41,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-22 01:38:41,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-22 01:38:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2024-11-22 01:38:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-22 01:38:41,455 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2024-11-22 01:38:41,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:38:41,455 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-22 01:38:41,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-22 01:38:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-22 01:38:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 01:38:41,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:38:41,457 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:38:41,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 01:38:41,457 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:38:41,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:38:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1187358532, now seen corresponding path program 1 times [2024-11-22 01:38:41,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:38:41,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204182160] [2024-11-22 01:38:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:38:41,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:38:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:38:41,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171057231] [2024-11-22 01:38:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:38:41,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:38:41,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:38:41,484 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) [2024-11-22 01:38:41,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 01:38:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:38:41,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 01:38:41,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:38:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:38:41,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:38:41,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:38:41,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204182160] [2024-11-22 01:38:41,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:38:41,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171057231] [2024-11-22 01:38:41,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171057231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:38:41,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:38:41,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:38:41,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54468631] [2024-11-22 01:38:41,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:38:41,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:38:41,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:38:41,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:38:41,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:38:41,612 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-22 01:38:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:38:41,676 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-22 01:38:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:38:41,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2024-11-22 01:38:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:38:41,681 INFO L225 Difference]: With dead ends: 26 [2024-11-22 01:38:41,682 INFO L226 Difference]: Without dead ends: 22 [2024-11-22 01:38:41,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:38:41,683 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:38:41,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:38:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-22 01:38:41,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-22 01:38:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 01:38:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-22 01:38:41,690 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2024-11-22 01:38:41,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:38:41,691 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-22 01:38:41,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-22 01:38:41,691 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-22 01:38:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-22 01:38:41,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:38:41,692 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:38:41,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 01:38:41,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:38:41,893 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:38:41,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:38:41,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1781398469, now seen corresponding path program 1 times [2024-11-22 01:38:41,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:38:41,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167803873] [2024-11-22 01:38:41,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:38:41,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:38:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:38:41,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417883401] [2024-11-22 01:38:41,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:38:41,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:38:41,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:38:41,956 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) [2024-11-22 01:38:41,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 01:38:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:38:42,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 01:38:42,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:38:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:38:42,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:38:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 01:38:42,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:38:42,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167803873] [2024-11-22 01:38:42,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:38:42,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417883401] [2024-11-22 01:38:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417883401] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 01:38:42,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:38:42,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-22 01:38:42,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961334105] [2024-11-22 01:38:42,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:38:42,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:38:42,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:38:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:38:42,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:38:42,270 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 01:38:42,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:38:42,308 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-22 01:38:42,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:38:42,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-22 01:38:42,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:38:42,309 INFO L225 Difference]: With dead ends: 28 [2024-11-22 01:38:42,309 INFO L226 Difference]: Without dead ends: 23 [2024-11-22 01:38:42,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:38:42,311 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:38:42,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 44 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:38:42,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-22 01:38:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-22 01:38:42,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 01:38:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2024-11-22 01:38:42,319 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2024-11-22 01:38:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:38:42,319 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2024-11-22 01:38:42,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 01:38:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2024-11-22 01:38:42,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-22 01:38:42,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:38:42,323 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:38:42,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 01:38:42,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-22 01:38:42,524 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:38:42,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:38:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1711372296, now seen corresponding path program 1 times [2024-11-22 01:38:42,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:38:42,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838834185] [2024-11-22 01:38:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:38:42,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:38:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:38:42,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133972645] [2024-11-22 01:38:42,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:38:42,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:38:42,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:38:42,564 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) [2024-11-22 01:38:42,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 01:38:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:38:42,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 01:38:42,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:38:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 01:38:42,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:38:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 01:38:42,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:38:42,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838834185] [2024-11-22 01:38:42,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:38:42,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133972645] [2024-11-22 01:38:42,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133972645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:38:42,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:38:42,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-22 01:38:42,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27935221] [2024-11-22 01:38:42,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:38:42,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 01:38:42,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:38:42,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 01:38:42,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:38:42,855 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 01:38:42,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:38:42,956 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-22 01:38:42,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:38:42,957 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2024-11-22 01:38:42,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:38:42,959 INFO L225 Difference]: With dead ends: 38 [2024-11-22 01:38:42,959 INFO L226 Difference]: Without dead ends: 32 [2024-11-22 01:38:42,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:38:42,961 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:38:42,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 109 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:38:42,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-22 01:38:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-22 01:38:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 01:38:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-11-22 01:38:42,975 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2024-11-22 01:38:42,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:38:42,976 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-11-22 01:38:42,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 01:38:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-11-22 01:38:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-22 01:38:42,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:38:42,978 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:38:42,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 01:38:43,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:38:43,179 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:38:43,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:38:43,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1384689793, now seen corresponding path program 2 times [2024-11-22 01:38:43,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:38:43,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265158709] [2024-11-22 01:38:43,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:38:43,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:38:43,208 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:38:43,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-22 01:38:43,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882019761] [2024-11-22 01:38:43,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:38:43,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:38:43,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:38:43,212 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) [2024-11-22 01:38:43,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 01:38:43,248 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:38:43,248 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:38:43,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-22 01:38:43,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:38:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 01:38:43,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:38:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 01:38:43,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:38:43,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265158709] [2024-11-22 01:38:43,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:38:43,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882019761] [2024-11-22 01:38:43,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882019761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:38:43,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:38:43,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-11-22 01:38:43,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734997007] [2024-11-22 01:38:43,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:38:43,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 01:38:43,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:38:43,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 01:38:43,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-22 01:38:43,690 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 22 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 01:38:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:38:43,917 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-22 01:38:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 01:38:43,918 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 43 [2024-11-22 01:38:43,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:38:43,918 INFO L225 Difference]: With dead ends: 36 [2024-11-22 01:38:43,918 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 01:38:43,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-11-22 01:38:43,921 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:38:43,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 192 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:38:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 01:38:43,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 01:38:43,924 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) [2024-11-22 01:38:43,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 01:38:43,924 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2024-11-22 01:38:43,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:38:43,924 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 01:38:43,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 01:38:43,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 01:38:43,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 01:38:43,926 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 01:38:43,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 01:38:44,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:38:44,135 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-11-22 01:38:44,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 01:38:44,395 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 01:38:44,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:38:44 BoogieIcfgContainer [2024-11-22 01:38:44,434 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 01:38:44,435 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 01:38:44,435 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 01:38:44,435 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 01:38:44,435 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:38:41" (3/4) ... [2024-11-22 01:38:44,439 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 01:38:44,444 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-22 01:38:44,449 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-22 01:38:44,449 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 01:38:44,450 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 01:38:44,450 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 01:38:44,572 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 01:38:44,573 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 01:38:44,573 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 01:38:44,573 INFO L158 Benchmark]: Toolchain (without parser) took 4016.00ms. Allocated memory was 138.4MB in the beginning and 232.8MB in the end (delta: 94.4MB). Free memory was 67.2MB in the beginning and 129.1MB in the end (delta: -61.9MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2024-11-22 01:38:44,573 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory was 102.0MB in the beginning and 101.9MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 01:38:44,574 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.43ms. Allocated memory was 138.4MB in the beginning and 232.8MB in the end (delta: 94.4MB). Free memory was 67.1MB in the beginning and 202.6MB in the end (delta: -135.6MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2024-11-22 01:38:44,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.38ms. Allocated memory is still 232.8MB. Free memory was 202.6MB in the beginning and 201.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 01:38:44,574 INFO L158 Benchmark]: Boogie Preprocessor took 32.49ms. Allocated memory is still 232.8MB. Free memory was 201.1MB in the beginning and 203.2MB in the end (delta: -2.1MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2024-11-22 01:38:44,574 INFO L158 Benchmark]: RCFGBuilder took 207.61ms. Allocated memory is still 232.8MB. Free memory was 203.2MB in the beginning and 191.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-22 01:38:44,575 INFO L158 Benchmark]: TraceAbstraction took 3273.07ms. Allocated memory is still 232.8MB. Free memory was 190.6MB in the beginning and 134.4MB in the end (delta: 56.2MB). Peak memory consumption was 55.1MB. Max. memory is 16.1GB. [2024-11-22 01:38:44,575 INFO L158 Benchmark]: Witness Printer took 137.92ms. Allocated memory is still 232.8MB. Free memory was 133.3MB in the beginning and 129.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 01:38:44,576 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory was 102.0MB in the beginning and 101.9MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.43ms. Allocated memory was 138.4MB in the beginning and 232.8MB in the end (delta: 94.4MB). Free memory was 67.1MB in the beginning and 202.6MB in the end (delta: -135.6MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.38ms. Allocated memory is still 232.8MB. Free memory was 202.6MB in the beginning and 201.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.49ms. Allocated memory is still 232.8MB. Free memory was 201.1MB in the beginning and 203.2MB in the end (delta: -2.1MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * RCFGBuilder took 207.61ms. Allocated memory is still 232.8MB. Free memory was 203.2MB in the beginning and 191.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3273.07ms. Allocated memory is still 232.8MB. Free memory was 190.6MB in the beginning and 134.4MB in the end (delta: 56.2MB). Peak memory consumption was 55.1MB. Max. memory is 16.1GB. * Witness Printer took 137.92ms. Allocated memory is still 232.8MB. Free memory was 133.3MB in the beginning and 129.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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: 12]: 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, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 411 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 333 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 275 IncrementalHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 78 mSDtfsCounter, 275 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 817 SizeOfPredicates, 7 NumberOfNonLiveVariables, 298 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 96/190 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: 27]: Loop Invariant Derived loop invariant: (((((y + ((__int128) y * y)) == (c + ((__int128) c * y))) && ((((__int128) 2 * c) + ((__int128) c * y)) == (((__int128) 2 * y) + ((__int128) y * y)))) && ((((__int128) k * y) == ((__int128) y * y)) || (c < k))) && (((((((__int128) y * y) * y) * 2) + ((((__int128) y * y) * y) * y)) + ((__int128) y * y)) == ((__int128) x * 4))) - ProcedureContractResult [Line: 9]: 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! [2024-11-22 01:38:44,593 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