./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.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/egcd2-ll_valuebound1.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 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:20:14,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:20:14,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:20:14,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:20:14,246 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:20:14,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:20:14,268 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:20:14,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:20:14,269 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:20:14,272 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:20:14,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:20:14,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:20:14,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:20:14,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:20:14,273 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:20:14,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:20:14,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:20:14,274 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:20:14,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:20:14,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:20:14,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:20:14,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:20:14,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:20:14,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:20:14,278 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:20:14,278 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:20:14,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:20:14,278 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:20:14,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:20:14,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:20:14,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:20:14,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:20:14,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:20:14,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:20:14,280 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:20:14,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:20:14,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:20:14,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:20:14,281 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:20:14,281 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:20:14,281 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:20:14,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:20:14,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a [2024-11-22 01:20:14,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:20:14,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:20:14,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:20:14,505 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:20:14,509 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:20:14,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-11-22 01:20:15,748 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:20:15,869 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:20:15,870 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-11-22 01:20:15,879 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c691ce2bd/3f719e810e2f468db92380f29124b034/FLAG64d801f92 [2024-11-22 01:20:15,894 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c691ce2bd/3f719e810e2f468db92380f29124b034 [2024-11-22 01:20:15,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:20:15,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:20:15,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:20:15,900 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:20:15,905 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:20:15,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:20:15" (1/1) ... [2024-11-22 01:20:15,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5570a59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:15, skipping insertion in model container [2024-11-22 01:20:15,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:20:15" (1/1) ... [2024-11-22 01:20:15,925 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:20:16,072 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/egcd2-ll_valuebound1.c[490,503] [2024-11-22 01:20:16,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:20:16,104 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:20:16,115 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/egcd2-ll_valuebound1.c[490,503] [2024-11-22 01:20:16,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:20:16,135 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:20:16,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16 WrapperNode [2024-11-22 01:20:16,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:20:16,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:20:16,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:20:16,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:20:16,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (1/1) ... [2024-11-22 01:20:16,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (1/1) ... [2024-11-22 01:20:16,168 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2024-11-22 01:20:16,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:20:16,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:20:16,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:20:16,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:20:16,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (1/1) ... [2024-11-22 01:20:16,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (1/1) ... [2024-11-22 01:20:16,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (1/1) ... [2024-11-22 01:20:16,198 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 01:20:16,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (1/1) ... [2024-11-22 01:20:16,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (1/1) ... [2024-11-22 01:20:16,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (1/1) ... [2024-11-22 01:20:16,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (1/1) ... [2024-11-22 01:20:16,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (1/1) ... [2024-11-22 01:20:16,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (1/1) ... [2024-11-22 01:20:16,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:20:16,212 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:20:16,213 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:20:16,213 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:20:16,213 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (1/1) ... [2024-11-22 01:20:16,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:20:16,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:20:16,291 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 01:20:16,295 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 01:20:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:20:16,327 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 01:20:16,327 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 01:20:16,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:20:16,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:20:16,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:20:16,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 01:20:16,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 01:20:16,371 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:20:16,373 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:20:16,483 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-22 01:20:16,483 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:20:16,496 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:20:16,497 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 01:20:16,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:16 BoogieIcfgContainer [2024-11-22 01:20:16,497 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:20:16,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:20:16,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:20:16,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:20:16,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:20:15" (1/3) ... [2024-11-22 01:20:16,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b51247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:16, skipping insertion in model container [2024-11-22 01:20:16,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:16" (2/3) ... [2024-11-22 01:20:16,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b51247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:16, skipping insertion in model container [2024-11-22 01:20:16,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:16" (3/3) ... [2024-11-22 01:20:16,505 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2024-11-22 01:20:16,517 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:20:16,517 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:20:16,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:20:16,564 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;@bb2ebc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:20:16,565 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:20:16,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-22 01:20:16,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-22 01:20:16,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:20:16,574 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:20:16,574 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:20:16,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:20:16,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1146169762, now seen corresponding path program 1 times [2024-11-22 01:20:16,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:20:16,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545321180] [2024-11-22 01:20:16,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:16,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:20:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-22 01:20:16,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:20:16,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545321180] [2024-11-22 01:20:16,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545321180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:20:16,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156720850] [2024-11-22 01:20:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:16,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:16,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:20:16,739 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 01:20:16,740 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 01:20:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:16,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 01:20:16,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:20:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-22 01:20:16,810 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:20:16,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156720850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:20:16,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:20:16,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 01:20:16,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897352193] [2024-11-22 01:20:16,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:20:16,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 01:20:16,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:20:16,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 01:20:16,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:20:16,832 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 01:20:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:20:16,847 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2024-11-22 01:20:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 01:20:16,848 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), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2024-11-22 01:20:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:20:16,853 INFO L225 Difference]: With dead ends: 67 [2024-11-22 01:20:16,853 INFO L226 Difference]: Without dead ends: 31 [2024-11-22 01:20:16,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 40 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 01:20:16,858 INFO L432 NwaCegarLoop]: 46 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, 46 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 01:20:16,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:20:16,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-22 01:20:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-22 01:20:16,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 01:20:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2024-11-22 01:20:16,886 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 39 [2024-11-22 01:20:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:20:16,886 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2024-11-22 01:20:16,887 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), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 01:20:16,887 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2024-11-22 01:20:16,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-22 01:20:16,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:20:16,888 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:20:16,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 01:20:17,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 01:20:17,093 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:20:17,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:20:17,094 INFO L85 PathProgramCache]: Analyzing trace with hash 846808023, now seen corresponding path program 1 times [2024-11-22 01:20:17,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:20:17,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13559317] [2024-11-22 01:20:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:17,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:20:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 01:20:17,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:20:17,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13559317] [2024-11-22 01:20:17,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13559317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:20:17,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875308563] [2024-11-22 01:20:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:17,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:17,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:20:17,386 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 01:20:17,389 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 01:20:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:17,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 01:20:17,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:20:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 01:20:17,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:20:17,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875308563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:20:17,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:20:17,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-11-22 01:20:17,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101095739] [2024-11-22 01:20:17,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:20:17,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 01:20:17,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:20:17,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 01:20:17,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-22 01:20:17,786 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-22 01:20:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:20:18,003 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2024-11-22 01:20:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 01:20:18,004 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 40 [2024-11-22 01:20:18,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:20:18,005 INFO L225 Difference]: With dead ends: 52 [2024-11-22 01:20:18,005 INFO L226 Difference]: Without dead ends: 44 [2024-11-22 01:20:18,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-22 01:20:18,006 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 31 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:20:18,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 194 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:20:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-22 01:20:18,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-11-22 01:20:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-22 01:20:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2024-11-22 01:20:18,021 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 40 [2024-11-22 01:20:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:20:18,021 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2024-11-22 01:20:18,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-22 01:20:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2024-11-22 01:20:18,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-22 01:20:18,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:20:18,022 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:20:18,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 01:20:18,226 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,SelfDestructingSolverStorable1 [2024-11-22 01:20:18,230 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:20:18,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:20:18,231 INFO L85 PathProgramCache]: Analyzing trace with hash 481927254, now seen corresponding path program 1 times [2024-11-22 01:20:18,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:20:18,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811086160] [2024-11-22 01:20:18,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:18,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:20:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:20:18,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653211925] [2024-11-22 01:20:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:18,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:18,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:20:18,251 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 01:20:18,251 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 01:20:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:18,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 01:20:18,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:20:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-22 01:20:18,342 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:20:18,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:20:18,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811086160] [2024-11-22 01:20:18,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:20:18,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653211925] [2024-11-22 01:20:18,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653211925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:20:18,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:20:18,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:20:18,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867240229] [2024-11-22 01:20:18,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:20:18,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:20:18,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:20:18,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:20:18,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:20:18,345 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-22 01:20:18,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:20:18,381 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2024-11-22 01:20:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:20:18,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 41 [2024-11-22 01:20:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:20:18,382 INFO L225 Difference]: With dead ends: 62 [2024-11-22 01:20:18,382 INFO L226 Difference]: Without dead ends: 60 [2024-11-22 01:20:18,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 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 01:20:18,383 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:20:18,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 136 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:20:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-22 01:20:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2024-11-22 01:20:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 01:20:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-11-22 01:20:18,392 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 41 [2024-11-22 01:20:18,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:20:18,393 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-11-22 01:20:18,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-22 01:20:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-11-22 01:20:18,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-22 01:20:18,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:20:18,394 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:20:18,404 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 01:20:18,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:18,599 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:20:18,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:20:18,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1626076469, now seen corresponding path program 1 times [2024-11-22 01:20:18,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:20:18,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830440509] [2024-11-22 01:20:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:18,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:20:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:20:18,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328038439] [2024-11-22 01:20:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:18,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:18,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:20:18,621 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 01:20:18,622 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 01:20:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:18,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:20:18,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:20:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-22 01:20:18,732 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:20:18,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:20:18,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830440509] [2024-11-22 01:20:18,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:20:18,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328038439] [2024-11-22 01:20:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328038439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:20:18,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:20:18,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:20:18,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151528407] [2024-11-22 01:20:18,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:20:18,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:20:18,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:20:18,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:20:18,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:20:18,736 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 01:20:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:20:18,773 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2024-11-22 01:20:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:20:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2024-11-22 01:20:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:20:18,776 INFO L225 Difference]: With dead ends: 58 [2024-11-22 01:20:18,776 INFO L226 Difference]: Without dead ends: 56 [2024-11-22 01:20:18,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 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 01:20:18,777 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:20:18,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 146 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:20:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-22 01:20:18,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2024-11-22 01:20:18,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 01:20:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2024-11-22 01:20:18,786 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 46 [2024-11-22 01:20:18,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:20:18,786 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2024-11-22 01:20:18,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 01:20:18,787 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2024-11-22 01:20:18,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 01:20:18,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:20:18,788 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:20:18,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 01:20:18,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:18,993 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:20:18,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:20:18,993 INFO L85 PathProgramCache]: Analyzing trace with hash -670274197, now seen corresponding path program 1 times [2024-11-22 01:20:18,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:20:18,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100066275] [2024-11-22 01:20:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:18,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:20:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:20:19,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140534393] [2024-11-22 01:20:19,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:19,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:19,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:20:19,013 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:20:19,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 01:20:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:19,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-22 01:20:19,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:20:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-22 01:20:19,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:20:19,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:20:19,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100066275] [2024-11-22 01:20:19,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:20:19,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140534393] [2024-11-22 01:20:19,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140534393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:20:19,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:20:19,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-22 01:20:19,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909087563] [2024-11-22 01:20:19,458 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 01:20:19,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 01:20:19,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:20:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 01:20:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-22 01:20:19,459 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 12 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 01:20:19,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:20:19,611 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2024-11-22 01:20:19,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 01:20:19,612 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56 [2024-11-22 01:20:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:20:19,613 INFO L225 Difference]: With dead ends: 64 [2024-11-22 01:20:19,613 INFO L226 Difference]: Without dead ends: 62 [2024-11-22 01:20:19,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-22 01:20:19,614 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 22 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:20:19,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 191 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:20:19,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-22 01:20:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2024-11-22 01:20:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 37 states have internal predecessors, (38), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 01:20:19,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2024-11-22 01:20:19,624 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 56 [2024-11-22 01:20:19,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:20:19,624 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2024-11-22 01:20:19,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 01:20:19,624 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2024-11-22 01:20:19,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-22 01:20:19,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:20:19,626 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:20:19,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 01:20:19,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:19,827 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:20:19,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:20:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash 815241237, now seen corresponding path program 1 times [2024-11-22 01:20:19,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:20:19,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751211202] [2024-11-22 01:20:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:19,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:20:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:20:19,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014541994] [2024-11-22 01:20:19,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:19,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:19,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:20:19,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:20:19,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 01:20:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:19,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 01:20:19,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:20:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-22 01:20:20,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:20:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-22 01:20:20,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:20:20,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751211202] [2024-11-22 01:20:20,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:20:20,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014541994] [2024-11-22 01:20:20,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014541994] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 01:20:20,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:20:20,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2024-11-22 01:20:20,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523679002] [2024-11-22 01:20:20,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:20:20,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:20:20,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:20:20,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:20:20,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:20:20,131 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-22 01:20:20,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:20:20,174 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2024-11-22 01:20:20,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:20:20,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 63 [2024-11-22 01:20:20,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:20:20,176 INFO L225 Difference]: With dead ends: 65 [2024-11-22 01:20:20,177 INFO L226 Difference]: Without dead ends: 63 [2024-11-22 01:20:20,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:20:20,178 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:20:20,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 130 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:20:20,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-22 01:20:20,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2024-11-22 01:20:20,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-22 01:20:20,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2024-11-22 01:20:20,193 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 63 [2024-11-22 01:20:20,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:20:20,195 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2024-11-22 01:20:20,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-22 01:20:20,195 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2024-11-22 01:20:20,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 01:20:20,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:20:20,196 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:20:20,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 01:20:20,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:20,398 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:20:20,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:20:20,399 INFO L85 PathProgramCache]: Analyzing trace with hash -759965185, now seen corresponding path program 1 times [2024-11-22 01:20:20,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:20:20,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41299830] [2024-11-22 01:20:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:20,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:20:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-22 01:20:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:20:20,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41299830] [2024-11-22 01:20:20,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41299830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:20:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416021929] [2024-11-22 01:20:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:20,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:20,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:20:20,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:20:20,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 01:20:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:20,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 01:20:20,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:20:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-22 01:20:21,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:20:21,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416021929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:20:21,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:20:21,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 17 [2024-11-22 01:20:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131901552] [2024-11-22 01:20:21,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:20:21,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 01:20:21,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:20:21,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 01:20:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-11-22 01:20:21,179 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-22 01:20:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:20:21,396 INFO L93 Difference]: Finished difference Result 87 states and 108 transitions. [2024-11-22 01:20:21,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 01:20:21,397 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 65 [2024-11-22 01:20:21,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:20:21,398 INFO L225 Difference]: With dead ends: 87 [2024-11-22 01:20:21,398 INFO L226 Difference]: Without dead ends: 66 [2024-11-22 01:20:21,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2024-11-22 01:20:21,399 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 31 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:20:21,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 265 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:20:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-22 01:20:21,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2024-11-22 01:20:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 01:20:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2024-11-22 01:20:21,407 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 65 [2024-11-22 01:20:21,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:20:21,408 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2024-11-22 01:20:21,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-22 01:20:21,408 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2024-11-22 01:20:21,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-22 01:20:21,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:20:21,409 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:20:21,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 01:20:21,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:21,610 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:20:21,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:20:21,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1712962370, now seen corresponding path program 1 times [2024-11-22 01:20:21,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:20:21,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628588160] [2024-11-22 01:20:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:21,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:20:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:20:21,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33345386] [2024-11-22 01:20:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:21,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:21,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:20:21,628 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:20:21,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 01:20:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:21,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-22 01:20:21,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:20:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-22 01:20:22,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:20:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-22 01:20:23,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:20:23,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628588160] [2024-11-22 01:20:23,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:20:23,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33345386] [2024-11-22 01:20:23,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33345386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:20:23,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:20:23,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2024-11-22 01:20:23,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278055972] [2024-11-22 01:20:23,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:20:23,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 01:20:23,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:20:23,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 01:20:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2024-11-22 01:20:23,161 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2024-11-22 01:20:25,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:20:25,320 INFO L93 Difference]: Finished difference Result 147 states and 215 transitions. [2024-11-22 01:20:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-22 01:20:25,321 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) Word has length 87 [2024-11-22 01:20:25,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:20:25,324 INFO L225 Difference]: With dead ends: 147 [2024-11-22 01:20:25,324 INFO L226 Difference]: Without dead ends: 145 [2024-11-22 01:20:25,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=426, Invalid=1644, Unknown=0, NotChecked=0, Total=2070 [2024-11-22 01:20:25,327 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 117 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 01:20:25,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 630 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 01:20:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-22 01:20:25,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 97. [2024-11-22 01:20:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 53 states have internal predecessors, (60), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-22 01:20:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 133 transitions. [2024-11-22 01:20:25,375 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 133 transitions. Word has length 87 [2024-11-22 01:20:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:20:25,377 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 133 transitions. [2024-11-22 01:20:25,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2024-11-22 01:20:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 133 transitions. [2024-11-22 01:20:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-22 01:20:25,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:20:25,378 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:20:25,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 01:20:25,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-22 01:20:25,579 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:20:25,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:20:25,580 INFO L85 PathProgramCache]: Analyzing trace with hash 169494115, now seen corresponding path program 1 times [2024-11-22 01:20:25,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:20:25,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517731973] [2024-11-22 01:20:25,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:25,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:20:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:20:25,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286340] [2024-11-22 01:20:25,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:25,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:25,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:20:25,623 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:20:25,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 01:20:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:25,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-22 01:20:25,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:20:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-22 01:20:26,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:20:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-22 01:20:26,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:20:26,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517731973] [2024-11-22 01:20:26,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:20:26,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286340] [2024-11-22 01:20:26,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:20:26,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:20:26,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2024-11-22 01:20:26,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845678030] [2024-11-22 01:20:26,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:20:26,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 01:20:26,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:20:26,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 01:20:26,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-11-22 01:20:26,274 INFO L87 Difference]: Start difference. First operand 97 states and 133 transitions. Second operand has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) [2024-11-22 01:20:27,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:20:27,065 INFO L93 Difference]: Finished difference Result 182 states and 270 transitions. [2024-11-22 01:20:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 01:20:27,066 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) Word has length 92 [2024-11-22 01:20:27,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:20:27,067 INFO L225 Difference]: With dead ends: 182 [2024-11-22 01:20:27,067 INFO L226 Difference]: Without dead ends: 176 [2024-11-22 01:20:27,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=991, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 01:20:27,071 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 87 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:20:27,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 444 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:20:27,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-22 01:20:27,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 147. [2024-11-22 01:20:27,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 82 states have internal predecessors, (95), 58 states have call successors, (58), 9 states have call predecessors, (58), 9 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-22 01:20:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 209 transitions. [2024-11-22 01:20:27,114 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 209 transitions. Word has length 92 [2024-11-22 01:20:27,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:20:27,114 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 209 transitions. [2024-11-22 01:20:27,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) [2024-11-22 01:20:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 209 transitions. [2024-11-22 01:20:27,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-22 01:20:27,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:20:27,115 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:20:27,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 01:20:27,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:27,320 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:20:27,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:20:27,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1037094417, now seen corresponding path program 1 times [2024-11-22 01:20:27,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:20:27,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128048525] [2024-11-22 01:20:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:27,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:20:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 39 proven. 12 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-22 01:20:27,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:20:27,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128048525] [2024-11-22 01:20:27,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128048525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:20:27,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591948043] [2024-11-22 01:20:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:20:27,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:27,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:20:27,568 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:20:27,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 01:20:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:20:27,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 01:20:27,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:20:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 99 proven. 12 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-22 01:20:27,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:20:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-22 01:20:27,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591948043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:20:27,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:20:27,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-22 01:20:27,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208140197] [2024-11-22 01:20:27,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:20:27,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 01:20:27,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:20:27,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 01:20:27,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:20:27,763 INFO L87 Difference]: Start difference. First operand 147 states and 209 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2024-11-22 01:20:27,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:20:27,877 INFO L93 Difference]: Finished difference Result 158 states and 218 transitions. [2024-11-22 01:20:27,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 01:20:27,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 98 [2024-11-22 01:20:27,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:20:27,878 INFO L225 Difference]: With dead ends: 158 [2024-11-22 01:20:27,878 INFO L226 Difference]: Without dead ends: 68 [2024-11-22 01:20:27,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-22 01:20:27,880 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 17 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:20:27,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 256 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:20:27,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-22 01:20:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-22 01:20:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-22 01:20:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2024-11-22 01:20:27,890 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 98 [2024-11-22 01:20:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:20:27,890 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2024-11-22 01:20:27,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2024-11-22 01:20:27,891 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2024-11-22 01:20:27,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-22 01:20:27,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:20:27,891 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:20:27,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 01:20:28,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 01:20:28,095 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:20:28,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:20:28,096 INFO L85 PathProgramCache]: Analyzing trace with hash 649793148, now seen corresponding path program 2 times [2024-11-22 01:20:28,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:20:28,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926319209] [2024-11-22 01:20:28,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:20:28,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:20:28,108 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:20:28,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:20:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 32 proven. 53 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-11-22 01:20:28,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:20:28,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926319209] [2024-11-22 01:20:28,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926319209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:20:28,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198959744] [2024-11-22 01:20:28,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:20:28,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:20:28,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:20:28,327 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:20:28,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 01:20:28,378 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:20:28,378 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:20:28,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 01:20:28,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:20:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 32 proven. 53 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-11-22 01:20:28,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:20:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-11-22 01:20:28,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198959744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:20:28,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:20:28,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-11-22 01:20:28,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711557869] [2024-11-22 01:20:28,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:20:28,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 01:20:28,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:20:28,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 01:20:28,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-22 01:20:28,706 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 16 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (52), 14 states have call predecessors, (52), 15 states have call successors, (52) [2024-11-22 01:20:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:20:28,931 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2024-11-22 01:20:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 01:20:28,931 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 16 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (52), 14 states have call predecessors, (52), 15 states have call successors, (52) Word has length 131 [2024-11-22 01:20:28,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:20:28,934 INFO L225 Difference]: With dead ends: 74 [2024-11-22 01:20:28,934 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 01:20:28,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 249 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2024-11-22 01:20:28,935 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 54 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:20:28,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 372 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:20:28,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 01:20:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 01:20:28,936 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 01:20:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 01:20:28,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 131 [2024-11-22 01:20:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:20:28,936 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 01:20:28,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 16 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (52), 14 states have call predecessors, (52), 15 states have call successors, (52) [2024-11-22 01:20:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 01:20:28,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 01:20:28,941 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 01:20:28,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 01:20:29,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 01:20:29,144 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:20:29,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 01:20:29,515 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 01:20:29,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:20:29 BoogieIcfgContainer [2024-11-22 01:20:29,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 01:20:29,535 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 01:20:29,535 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 01:20:29,536 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 01:20:29,536 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:16" (3/4) ... [2024-11-22 01:20:29,538 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 01:20:29,541 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-22 01:20:29,541 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-22 01:20:29,545 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-22 01:20:29,546 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 01:20:29,546 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 01:20:29,546 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 01:20:29,624 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 01:20:29,624 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 01:20:29,624 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 01:20:29,624 INFO L158 Benchmark]: Toolchain (without parser) took 13727.55ms. Allocated memory was 176.2MB in the beginning and 343.9MB in the end (delta: 167.8MB). Free memory was 106.4MB in the beginning and 119.8MB in the end (delta: -13.4MB). Peak memory consumption was 157.2MB. Max. memory is 16.1GB. [2024-11-22 01:20:29,625 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 176.2MB. Free memory is still 131.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 01:20:29,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.81ms. Allocated memory is still 176.2MB. Free memory was 106.1MB in the beginning and 93.1MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-22 01:20:29,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.19ms. Allocated memory is still 176.2MB. Free memory was 93.1MB in the beginning and 91.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 01:20:29,625 INFO L158 Benchmark]: Boogie Preprocessor took 43.04ms. Allocated memory is still 176.2MB. Free memory was 91.5MB in the beginning and 89.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 01:20:29,625 INFO L158 Benchmark]: RCFGBuilder took 284.97ms. Allocated memory is still 176.2MB. Free memory was 89.6MB in the beginning and 134.7MB in the end (delta: -45.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 01:20:29,625 INFO L158 Benchmark]: TraceAbstraction took 13035.70ms. Allocated memory was 176.2MB in the beginning and 343.9MB in the end (delta: 167.8MB). Free memory was 134.0MB in the beginning and 124.0MB in the end (delta: 10.0MB). Peak memory consumption was 180.2MB. Max. memory is 16.1GB. [2024-11-22 01:20:29,626 INFO L158 Benchmark]: Witness Printer took 88.68ms. Allocated memory is still 343.9MB. Free memory was 124.0MB in the beginning and 119.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 01:20:29,627 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 176.2MB. Free memory is still 131.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.81ms. Allocated memory is still 176.2MB. Free memory was 106.1MB in the beginning and 93.1MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.19ms. Allocated memory is still 176.2MB. Free memory was 93.1MB in the beginning and 91.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.04ms. Allocated memory is still 176.2MB. Free memory was 91.5MB in the beginning and 89.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 284.97ms. Allocated memory is still 176.2MB. Free memory was 89.6MB in the beginning and 134.7MB in the end (delta: -45.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 13035.70ms. Allocated memory was 176.2MB in the beginning and 343.9MB in the end (delta: 167.8MB). Free memory was 134.0MB in the beginning and 124.0MB in the end (delta: 10.0MB). Peak memory consumption was 180.2MB. Max. memory is 16.1GB. * Witness Printer took 88.68ms. Allocated memory is still 343.9MB. Free memory was 124.0MB in the beginning and 119.8MB 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: 13]: 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 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 11, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 394 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 372 mSDsluCounter, 2810 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2401 mSDsCounter, 435 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1967 IncrementalHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 435 mSolverCounterUnsat, 409 mSDtfsCounter, 1967 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1330 GetRequests, 1130 SyntacticMatches, 6 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred in iteration=9, InterpolantAutomatonStates: 121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 100 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 1516 NumberOfCodeBlocks, 1516 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1581 ConstructedInterpolants, 0 QuantifiedInterpolants, 5420 SizeOfPredicates, 25 NumberOfNonLiveVariables, 1876 ConjunctsInSsa, 229 ConjunctsInUnsatCore, 21 InterpolantComputations, 4 PerfectInterpolantSequences, 3950/4326 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: 47]: Loop Invariant Derived loop invariant: ((((((((((((b == 1) && (p == 1)) && (c == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (s == 1)) || (((((((((((c == 0) && (k == 1)) && (b == 1)) && (p == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((b == 1) && (p == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1)) || (((((((__int128) q + s) == 0) && (b == 0)) && (x == 1)) && (y == 1)) && ((((__int128) r * y) + ((__int128) p * x)) == a))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: 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 01:20:29,642 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