./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.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 f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:33:09,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:33:09,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:33:09,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:33:09,593 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:33:09,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:33:09,627 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:33:09,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:33:09,628 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:33:09,628 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:33:09,629 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:33:09,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:33:09,630 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:33:09,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:33:09,632 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:33:09,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:33:09,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:33:09,633 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:33:09,633 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:33:09,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:33:09,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:33:09,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:33:09,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:33:09,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:33:09,638 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:33:09,639 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:33:09,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:33:09,639 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:33:09,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:33:09,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:33:09,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:33:09,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:33:09,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:33:09,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:33:09,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:33:09,641 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:33:09,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:33:09,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:33:09,642 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:33:09,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:33:09,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:33:09,643 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:33:09,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2024-11-18 09:33:09,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:33:09,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:33:09,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:33:09,928 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:33:09,928 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:33:09,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2024-11-18 09:33:11,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:33:11,542 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:33:11,543 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2024-11-18 09:33:11,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/291b606f8/e12ca66eefe9499f97e50c9b737aa13a/FLAG64a697109 [2024-11-18 09:33:11,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/291b606f8/e12ca66eefe9499f97e50c9b737aa13a [2024-11-18 09:33:11,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:33:11,570 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:33:11,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:33:11,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:33:11,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:33:11,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292dfe58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11, skipping insertion in model container [2024-11-18 09:33:11,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,620 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:33:11,761 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2024-11-18 09:33:11,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:33:11,812 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:33:11,822 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2024-11-18 09:33:11,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:33:11,877 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:33:11,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11 WrapperNode [2024-11-18 09:33:11,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:33:11,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:33:11,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:33:11,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:33:11,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,919 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 147 [2024-11-18 09:33:11,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:33:11,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:33:11,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:33:11,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:33:11,928 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,930 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,947 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 09:33:11,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,952 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:33:11,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:33:11,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:33:11,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:33:11,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (1/1) ... [2024-11-18 09:33:11,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:33:11,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:12,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 09:33:12,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 09:33:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:33:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:33:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-18 09:33:12,052 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-18 09:33:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:33:12,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:33:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 09:33:12,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 09:33:12,112 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:33:12,115 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:33:12,450 INFO L? ?]: Removed 62 outVars from TransFormulas that were not future-live. [2024-11-18 09:33:12,450 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:33:12,469 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:33:12,469 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 09:33:12,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:33:12 BoogieIcfgContainer [2024-11-18 09:33:12,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:33:12,471 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:33:12,471 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:33:12,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:33:12,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:33:11" (1/3) ... [2024-11-18 09:33:12,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3170cbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:33:12, skipping insertion in model container [2024-11-18 09:33:12,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:11" (2/3) ... [2024-11-18 09:33:12,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3170cbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:33:12, skipping insertion in model container [2024-11-18 09:33:12,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:33:12" (3/3) ... [2024-11-18 09:33:12,483 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2024-11-18 09:33:12,499 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:33:12,499 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:33:12,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:33:12,565 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;@77ea9773, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:33:12,570 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:33:12,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 68 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 09:33:12,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 09:33:12,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:12,585 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2024-11-18 09:33:12,585 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:12,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:12,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1280901460, now seen corresponding path program 1 times [2024-11-18 09:33:12,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:12,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014048627] [2024-11-18 09:33:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:12,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 09:33:13,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:13,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014048627] [2024-11-18 09:33:13,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014048627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:13,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:33:13,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:33:13,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825392681] [2024-11-18 09:33:13,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:13,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:33:13,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:13,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:33:13,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:33:13,059 INFO L87 Difference]: Start difference. First operand has 75 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 68 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:33:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:13,103 INFO L93 Difference]: Finished difference Result 175 states and 269 transitions. [2024-11-18 09:33:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:33:13,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-11-18 09:33:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:13,116 INFO L225 Difference]: With dead ends: 175 [2024-11-18 09:33:13,116 INFO L226 Difference]: Without dead ends: 69 [2024-11-18 09:33:13,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:33:13,122 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 35 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:13,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 203 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:33:13,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-18 09:33:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-18 09:33:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 09:33:13,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2024-11-18 09:33:13,160 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 42 [2024-11-18 09:33:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:13,162 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2024-11-18 09:33:13,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:33:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2024-11-18 09:33:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 09:33:13,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:13,164 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2024-11-18 09:33:13,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:33:13,165 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:13,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:13,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2080463270, now seen corresponding path program 1 times [2024-11-18 09:33:13,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:13,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292258586] [2024-11-18 09:33:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:13,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 09:33:13,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:13,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292258586] [2024-11-18 09:33:13,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292258586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:13,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:33:13,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:33:13,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327285907] [2024-11-18 09:33:13,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:13,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:33:13,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:33:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:33:13,414 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:33:13,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:13,474 INFO L93 Difference]: Finished difference Result 106 states and 148 transitions. [2024-11-18 09:33:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:33:13,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2024-11-18 09:33:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:13,480 INFO L225 Difference]: With dead ends: 106 [2024-11-18 09:33:13,480 INFO L226 Difference]: Without dead ends: 69 [2024-11-18 09:33:13,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:33:13,482 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 35 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:13,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 283 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:33:13,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-18 09:33:13,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-18 09:33:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.403225806451613) internal successors, (87), 62 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 09:33:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2024-11-18 09:33:13,500 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 44 [2024-11-18 09:33:13,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:13,501 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2024-11-18 09:33:13,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:33:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2024-11-18 09:33:13,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 09:33:13,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:13,505 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2024-11-18 09:33:13,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:33:13,505 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:13,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1493657256, now seen corresponding path program 1 times [2024-11-18 09:33:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:13,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647939692] [2024-11-18 09:33:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:13,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:33:13,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:13,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647939692] [2024-11-18 09:33:13,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647939692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:13,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181675945] [2024-11-18 09:33:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:13,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:13,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:13,664 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:13,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:33:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:13,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 09:33:13,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:33:13,814 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:33:13,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181675945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:13,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:33:13,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:33:13,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082235596] [2024-11-18 09:33:13,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:13,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:33:13,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:33:13,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:33:13,816 INFO L87 Difference]: Start difference. First operand 69 states and 96 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:13,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:13,920 INFO L93 Difference]: Finished difference Result 156 states and 222 transitions. [2024-11-18 09:33:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 09:33:13,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2024-11-18 09:33:13,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:13,926 INFO L225 Difference]: With dead ends: 156 [2024-11-18 09:33:13,926 INFO L226 Difference]: Without dead ends: 90 [2024-11-18 09:33:13,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:33:13,928 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 21 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:13,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 222 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:33:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-18 09:33:13,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2024-11-18 09:33:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 74 states have internal predecessors, (103), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-18 09:33:13,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 114 transitions. [2024-11-18 09:33:13,938 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 114 transitions. Word has length 44 [2024-11-18 09:33:13,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:13,938 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 114 transitions. [2024-11-18 09:33:13,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:13,939 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 114 transitions. [2024-11-18 09:33:13,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 09:33:13,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:13,940 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1] [2024-11-18 09:33:13,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 09:33:14,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:14,146 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:14,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:14,146 INFO L85 PathProgramCache]: Analyzing trace with hash 417180924, now seen corresponding path program 1 times [2024-11-18 09:33:14,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:14,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848727859] [2024-11-18 09:33:14,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:14,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:33:14,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:14,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848727859] [2024-11-18 09:33:14,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848727859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:14,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980875429] [2024-11-18 09:33:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:14,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:14,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:14,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:14,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:33:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:14,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:33:14,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:33:14,366 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:33:14,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980875429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:14,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:33:14,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:33:14,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907646762] [2024-11-18 09:33:14,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:14,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:33:14,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:14,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:33:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:33:14,368 INFO L87 Difference]: Start difference. First operand 82 states and 114 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:14,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:14,440 INFO L93 Difference]: Finished difference Result 172 states and 242 transitions. [2024-11-18 09:33:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:33:14,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-11-18 09:33:14,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:14,442 INFO L225 Difference]: With dead ends: 172 [2024-11-18 09:33:14,445 INFO L226 Difference]: Without dead ends: 97 [2024-11-18 09:33:14,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:33:14,447 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 15 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:14,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 238 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:33:14,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-18 09:33:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2024-11-18 09:33:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 79 states have internal predecessors, (108), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 09:33:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 121 transitions. [2024-11-18 09:33:14,467 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 121 transitions. Word has length 47 [2024-11-18 09:33:14,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:14,471 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 121 transitions. [2024-11-18 09:33:14,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 121 transitions. [2024-11-18 09:33:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 09:33:14,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:14,473 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-11-18 09:33:14,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:33:14,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 09:33:14,675 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:14,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:14,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1524103143, now seen corresponding path program 1 times [2024-11-18 09:33:14,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:14,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574738817] [2024-11-18 09:33:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:14,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:33:14,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574738817] [2024-11-18 09:33:14,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574738817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409263835] [2024-11-18 09:33:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:14,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:14,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:14,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:14,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:33:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:14,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:33:14,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:33:14,838 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:33:14,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409263835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:14,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:33:14,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:33:14,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269240149] [2024-11-18 09:33:14,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:14,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:33:14,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:14,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:33:14,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:33:14,843 INFO L87 Difference]: Start difference. First operand 87 states and 121 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:14,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:14,909 INFO L93 Difference]: Finished difference Result 178 states and 251 transitions. [2024-11-18 09:33:14,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:33:14,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2024-11-18 09:33:14,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:14,911 INFO L225 Difference]: With dead ends: 178 [2024-11-18 09:33:14,911 INFO L226 Difference]: Without dead ends: 98 [2024-11-18 09:33:14,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:33:14,912 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 16 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:14,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 240 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:33:14,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-18 09:33:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 88. [2024-11-18 09:33:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 09:33:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2024-11-18 09:33:14,940 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 48 [2024-11-18 09:33:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:14,941 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2024-11-18 09:33:14,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2024-11-18 09:33:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-18 09:33:14,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:14,943 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:14,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 09:33:15,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:15,147 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:15,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:15,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1669508678, now seen corresponding path program 1 times [2024-11-18 09:33:15,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:15,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007473115] [2024-11-18 09:33:15,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:15,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:33:15,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:15,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007473115] [2024-11-18 09:33:15,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007473115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:15,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701001300] [2024-11-18 09:33:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:15,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:15,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:15,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:15,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:33:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:15,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:33:15,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:33:15,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:33:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:33:15,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701001300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:33:15,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:33:15,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-18 09:33:15,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889875342] [2024-11-18 09:33:15,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:33:15,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:33:15,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:15,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:33:15,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:33:15,456 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 09:33:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:15,555 INFO L93 Difference]: Finished difference Result 229 states and 330 transitions. [2024-11-18 09:33:15,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:33:15,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2024-11-18 09:33:15,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:15,557 INFO L225 Difference]: With dead ends: 229 [2024-11-18 09:33:15,558 INFO L226 Difference]: Without dead ends: 148 [2024-11-18 09:33:15,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:33:15,560 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 124 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:15,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 358 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:33:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-18 09:33:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 102. [2024-11-18 09:33:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 94 states have internal predecessors, (133), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 09:33:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 146 transitions. [2024-11-18 09:33:15,578 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 146 transitions. Word has length 50 [2024-11-18 09:33:15,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:15,578 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 146 transitions. [2024-11-18 09:33:15,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 09:33:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 146 transitions. [2024-11-18 09:33:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 09:33:15,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:15,582 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1] [2024-11-18 09:33:15,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:33:15,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:15,785 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:15,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:15,786 INFO L85 PathProgramCache]: Analyzing trace with hash 376667408, now seen corresponding path program 1 times [2024-11-18 09:33:15,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:15,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484076339] [2024-11-18 09:33:15,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:15,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:33:15,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:15,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484076339] [2024-11-18 09:33:15,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484076339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:15,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360743103] [2024-11-18 09:33:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:15,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:15,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:15,843 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:15,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:33:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:15,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:33:15,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:33:15,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:33:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:33:16,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360743103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:33:16,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:33:16,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-18 09:33:16,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575117887] [2024-11-18 09:33:16,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:33:16,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:33:16,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:16,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:33:16,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:33:16,009 INFO L87 Difference]: Start difference. First operand 102 states and 146 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 09:33:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:16,101 INFO L93 Difference]: Finished difference Result 248 states and 362 transitions. [2024-11-18 09:33:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:33:16,101 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2024-11-18 09:33:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:16,102 INFO L225 Difference]: With dead ends: 248 [2024-11-18 09:33:16,103 INFO L226 Difference]: Without dead ends: 153 [2024-11-18 09:33:16,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:33:16,103 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 126 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:16,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 423 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:33:16,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-18 09:33:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 111. [2024-11-18 09:33:16,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 102 states have (on average 1.4509803921568627) internal successors, (148), 103 states have internal predecessors, (148), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 09:33:16,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2024-11-18 09:33:16,111 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 161 transitions. Word has length 51 [2024-11-18 09:33:16,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:16,111 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 161 transitions. [2024-11-18 09:33:16,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 09:33:16,111 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 161 transitions. [2024-11-18 09:33:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 09:33:16,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:16,112 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:16,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:33:16,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:16,314 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:16,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:16,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1690184016, now seen corresponding path program 1 times [2024-11-18 09:33:16,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:16,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218210420] [2024-11-18 09:33:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:16,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:16,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:33:16,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:16,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218210420] [2024-11-18 09:33:16,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218210420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:16,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665920606] [2024-11-18 09:33:16,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:16,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:16,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:16,360 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:16,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:33:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:16,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:33:16,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 09:33:16,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:33:16,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665920606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:16,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:33:16,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-18 09:33:16,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197176664] [2024-11-18 09:33:16,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:16,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:33:16,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:16,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:33:16,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:33:16,429 INFO L87 Difference]: Start difference. First operand 111 states and 161 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:16,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:16,455 INFO L93 Difference]: Finished difference Result 224 states and 332 transitions. [2024-11-18 09:33:16,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:33:16,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-18 09:33:16,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:16,456 INFO L225 Difference]: With dead ends: 224 [2024-11-18 09:33:16,456 INFO L226 Difference]: Without dead ends: 120 [2024-11-18 09:33:16,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:33:16,457 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 5 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:16,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 172 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:33:16,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-18 09:33:16,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2024-11-18 09:33:16,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 104 states have (on average 1.4423076923076923) internal successors, (150), 105 states have internal predecessors, (150), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 09:33:16,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 163 transitions. [2024-11-18 09:33:16,464 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 163 transitions. Word has length 52 [2024-11-18 09:33:16,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:16,464 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 163 transitions. [2024-11-18 09:33:16,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:16,464 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 163 transitions. [2024-11-18 09:33:16,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 09:33:16,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:16,465 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:16,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 09:33:16,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:16,666 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:16,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:16,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2138286388, now seen corresponding path program 1 times [2024-11-18 09:33:16,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:16,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609408035] [2024-11-18 09:33:16,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:16,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:33:16,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:16,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609408035] [2024-11-18 09:33:16,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609408035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:16,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127773676] [2024-11-18 09:33:16,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:16,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:16,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:16,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:16,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:33:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:16,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:33:16,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 09:33:16,770 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:33:16,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127773676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:16,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:33:16,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-18 09:33:16,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621873102] [2024-11-18 09:33:16,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:16,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:33:16,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:33:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:33:16,771 INFO L87 Difference]: Start difference. First operand 113 states and 163 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:16,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:16,804 INFO L93 Difference]: Finished difference Result 222 states and 326 transitions. [2024-11-18 09:33:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:33:16,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-18 09:33:16,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:16,806 INFO L225 Difference]: With dead ends: 222 [2024-11-18 09:33:16,806 INFO L226 Difference]: Without dead ends: 116 [2024-11-18 09:33:16,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:33:16,807 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 8 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:16,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 171 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:33:16,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-18 09:33:16,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2024-11-18 09:33:16,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 100 states have (on average 1.42) internal successors, (142), 101 states have internal predecessors, (142), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 09:33:16,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2024-11-18 09:33:16,815 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 52 [2024-11-18 09:33:16,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:16,815 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2024-11-18 09:33:16,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:16,815 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2024-11-18 09:33:16,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 09:33:16,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:16,816 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:16,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 09:33:17,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:17,018 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:17,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:17,018 INFO L85 PathProgramCache]: Analyzing trace with hash -574027671, now seen corresponding path program 1 times [2024-11-18 09:33:17,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:17,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398532908] [2024-11-18 09:33:17,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:17,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:33:17,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:17,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398532908] [2024-11-18 09:33:17,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398532908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:17,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313513495] [2024-11-18 09:33:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:17,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:17,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:17,162 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:17,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:33:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:17,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 09:33:17,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:33:17,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:33:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:33:17,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313513495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:33:17,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:33:17,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-18 09:33:17,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913703060] [2024-11-18 09:33:17,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:33:17,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 09:33:17,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:17,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 09:33:17,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-18 09:33:17,490 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 17 states have internal predecessors, (80), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 09:33:17,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:17,730 INFO L93 Difference]: Finished difference Result 237 states and 338 transitions. [2024-11-18 09:33:17,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 09:33:17,731 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 17 states have internal predecessors, (80), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 53 [2024-11-18 09:33:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:17,733 INFO L225 Difference]: With dead ends: 237 [2024-11-18 09:33:17,733 INFO L226 Difference]: Without dead ends: 135 [2024-11-18 09:33:17,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2024-11-18 09:33:17,734 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 72 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:17,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 656 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:33:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-18 09:33:17,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 104. [2024-11-18 09:33:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 95 states have (on average 1.3578947368421053) internal successors, (129), 96 states have internal predecessors, (129), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 09:33:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 142 transitions. [2024-11-18 09:33:17,741 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 142 transitions. Word has length 53 [2024-11-18 09:33:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:17,741 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 142 transitions. [2024-11-18 09:33:17,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 17 states have internal predecessors, (80), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 09:33:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 142 transitions. [2024-11-18 09:33:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 09:33:17,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:17,742 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:17,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 09:33:17,946 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,SelfDestructingSolverStorable9 [2024-11-18 09:33:17,947 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:17,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2026084180, now seen corresponding path program 1 times [2024-11-18 09:33:17,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:17,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654853559] [2024-11-18 09:33:17,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:17,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 09:33:18,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:18,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654853559] [2024-11-18 09:33:18,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654853559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:18,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:33:18,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 09:33:18,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758801990] [2024-11-18 09:33:18,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:18,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 09:33:18,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:18,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 09:33:18,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:33:18,032 INFO L87 Difference]: Start difference. First operand 104 states and 142 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:33:18,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:18,056 INFO L93 Difference]: Finished difference Result 110 states and 147 transitions. [2024-11-18 09:33:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:33:18,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2024-11-18 09:33:18,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:18,058 INFO L225 Difference]: With dead ends: 110 [2024-11-18 09:33:18,058 INFO L226 Difference]: Without dead ends: 99 [2024-11-18 09:33:18,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:33:18,059 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 1 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:18,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 459 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:33:18,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-18 09:33:18,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-18 09:33:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 90 states have (on average 1.3444444444444446) internal successors, (121), 91 states have internal predecessors, (121), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 09:33:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 134 transitions. [2024-11-18 09:33:18,064 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 134 transitions. Word has length 55 [2024-11-18 09:33:18,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:18,064 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 134 transitions. [2024-11-18 09:33:18,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:33:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 134 transitions. [2024-11-18 09:33:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 09:33:18,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:18,065 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:18,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 09:33:18,065 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:18,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:18,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1749930752, now seen corresponding path program 1 times [2024-11-18 09:33:18,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:18,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416517999] [2024-11-18 09:33:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:18,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:33:18,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:18,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416517999] [2024-11-18 09:33:18,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416517999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:18,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71235633] [2024-11-18 09:33:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:18,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:18,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:18,155 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:18,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:33:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:18,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:33:18,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 09:33:18,263 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:33:18,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71235633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:18,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:33:18,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:33:18,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384281567] [2024-11-18 09:33:18,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:18,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:33:18,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:18,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:33:18,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:33:18,264 INFO L87 Difference]: Start difference. First operand 99 states and 134 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:18,299 INFO L93 Difference]: Finished difference Result 197 states and 271 transitions. [2024-11-18 09:33:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:33:18,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2024-11-18 09:33:18,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:18,300 INFO L225 Difference]: With dead ends: 197 [2024-11-18 09:33:18,300 INFO L226 Difference]: Without dead ends: 105 [2024-11-18 09:33:18,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:33:18,301 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 6 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:18,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 170 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:33:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-18 09:33:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2024-11-18 09:33:18,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 91 states have internal predecessors, (120), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 09:33:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 133 transitions. [2024-11-18 09:33:18,307 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 133 transitions. Word has length 60 [2024-11-18 09:33:18,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:18,307 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 133 transitions. [2024-11-18 09:33:18,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:18,307 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 133 transitions. [2024-11-18 09:33:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-18 09:33:18,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:18,308 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:18,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 09:33:18,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:18,509 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:18,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1305380647, now seen corresponding path program 1 times [2024-11-18 09:33:18,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:18,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584462287] [2024-11-18 09:33:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:18,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:33:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584462287] [2024-11-18 09:33:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584462287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:18,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785871904] [2024-11-18 09:33:18,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:18,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:18,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:18,636 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:18,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:33:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:18,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 09:33:18,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:33:18,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:33:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:33:18,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785871904] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:33:18,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:33:18,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-18 09:33:18,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861744960] [2024-11-18 09:33:18,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:33:18,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:33:18,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:18,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:33:18,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:33:18,806 INFO L87 Difference]: Start difference. First operand 99 states and 133 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 12 states have internal predecessors, (55), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 09:33:18,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:18,870 INFO L93 Difference]: Finished difference Result 148 states and 200 transitions. [2024-11-18 09:33:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:33:18,870 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 12 states have internal predecessors, (55), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 61 [2024-11-18 09:33:18,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:18,871 INFO L225 Difference]: With dead ends: 148 [2024-11-18 09:33:18,871 INFO L226 Difference]: Without dead ends: 105 [2024-11-18 09:33:18,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:33:18,872 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 2 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:18,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 833 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:33:18,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-18 09:33:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-18 09:33:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 97 states have internal predecessors, (124), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-18 09:33:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 139 transitions. [2024-11-18 09:33:18,878 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 139 transitions. Word has length 61 [2024-11-18 09:33:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:18,878 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 139 transitions. [2024-11-18 09:33:18,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 12 states have internal predecessors, (55), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 09:33:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 139 transitions. [2024-11-18 09:33:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 09:33:18,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:18,879 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:18,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 09:33:19,083 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,SelfDestructingSolverStorable12 [2024-11-18 09:33:19,084 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:19,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:19,084 INFO L85 PathProgramCache]: Analyzing trace with hash 508824728, now seen corresponding path program 1 times [2024-11-18 09:33:19,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:19,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910139404] [2024-11-18 09:33:19,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:19,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 09:33:19,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:19,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910139404] [2024-11-18 09:33:19,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910139404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:19,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:33:19,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 09:33:19,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601256198] [2024-11-18 09:33:19,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:19,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:33:19,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:19,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:33:19,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:33:19,192 INFO L87 Difference]: Start difference. First operand 105 states and 139 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:33:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:19,220 INFO L93 Difference]: Finished difference Result 146 states and 190 transitions. [2024-11-18 09:33:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:33:19,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2024-11-18 09:33:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:19,221 INFO L225 Difference]: With dead ends: 146 [2024-11-18 09:33:19,222 INFO L226 Difference]: Without dead ends: 102 [2024-11-18 09:33:19,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:33:19,222 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 1 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:19,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 517 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:33:19,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-18 09:33:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-18 09:33:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 92 states have (on average 1.2826086956521738) internal successors, (118), 94 states have internal predecessors, (118), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 09:33:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 130 transitions. [2024-11-18 09:33:19,228 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 130 transitions. Word has length 65 [2024-11-18 09:33:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:19,228 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 130 transitions. [2024-11-18 09:33:19,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:33:19,228 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 130 transitions. [2024-11-18 09:33:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 09:33:19,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:19,229 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:19,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 09:33:19,229 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:19,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:19,230 INFO L85 PathProgramCache]: Analyzing trace with hash -43503289, now seen corresponding path program 2 times [2024-11-18 09:33:19,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:19,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907837695] [2024-11-18 09:33:19,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:33:19,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:19,259 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 09:33:19,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:33:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 09:33:19,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:19,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907837695] [2024-11-18 09:33:19,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907837695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:19,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:33:19,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 09:33:19,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087136204] [2024-11-18 09:33:19,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:19,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 09:33:19,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:19,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 09:33:19,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 09:33:19,371 INFO L87 Difference]: Start difference. First operand 102 states and 130 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:33:19,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:19,437 INFO L93 Difference]: Finished difference Result 150 states and 190 transitions. [2024-11-18 09:33:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:33:19,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 69 [2024-11-18 09:33:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:19,438 INFO L225 Difference]: With dead ends: 150 [2024-11-18 09:33:19,438 INFO L226 Difference]: Without dead ends: 120 [2024-11-18 09:33:19,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 09:33:19,439 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 8 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:19,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 664 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:33:19,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-18 09:33:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2024-11-18 09:33:19,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 104 states have internal predecessors, (129), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-18 09:33:19,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 143 transitions. [2024-11-18 09:33:19,446 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 143 transitions. Word has length 69 [2024-11-18 09:33:19,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:19,446 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 143 transitions. [2024-11-18 09:33:19,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:33:19,447 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 143 transitions. [2024-11-18 09:33:19,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 09:33:19,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:19,447 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:19,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 09:33:19,448 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:19,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:19,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1631851191, now seen corresponding path program 1 times [2024-11-18 09:33:19,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:19,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007723648] [2024-11-18 09:33:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:19,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:33:19,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:19,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007723648] [2024-11-18 09:33:19,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007723648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:19,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070358797] [2024-11-18 09:33:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:19,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:19,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:19,634 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:19,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:33:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:19,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 09:33:19,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 09:33:19,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:33:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 09:33:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070358797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:33:19,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:33:19,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-11-18 09:33:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217023128] [2024-11-18 09:33:19,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:33:19,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 09:33:19,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 09:33:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2024-11-18 09:33:19,977 INFO L87 Difference]: Start difference. First operand 113 states and 143 transitions. Second operand has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 19 states have internal predecessors, (84), 6 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-18 09:33:20,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:20,077 INFO L93 Difference]: Finished difference Result 163 states and 207 transitions. [2024-11-18 09:33:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:33:20,077 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 19 states have internal predecessors, (84), 6 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) Word has length 69 [2024-11-18 09:33:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:20,078 INFO L225 Difference]: With dead ends: 163 [2024-11-18 09:33:20,078 INFO L226 Difference]: Without dead ends: 113 [2024-11-18 09:33:20,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2024-11-18 09:33:20,079 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 45 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:20,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1272 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:33:20,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-18 09:33:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-18 09:33:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 104 states have internal predecessors, (129), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 09:33:20,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 142 transitions. [2024-11-18 09:33:20,085 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 142 transitions. Word has length 69 [2024-11-18 09:33:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:20,086 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 142 transitions. [2024-11-18 09:33:20,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 19 states have internal predecessors, (84), 6 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-18 09:33:20,086 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 142 transitions. [2024-11-18 09:33:20,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 09:33:20,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:20,086 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:20,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 09:33:20,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 09:33:20,291 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:20,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:20,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1663797463, now seen corresponding path program 1 times [2024-11-18 09:33:20,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:20,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655533396] [2024-11-18 09:33:20,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:20,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:33:20,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:20,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655533396] [2024-11-18 09:33:20,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655533396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:20,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385617219] [2024-11-18 09:33:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:20,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:20,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:20,414 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:20,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 09:33:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:20,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 09:33:20,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 09:33:20,534 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:33:20,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385617219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:20,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:33:20,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-11-18 09:33:20,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648649431] [2024-11-18 09:33:20,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:20,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:33:20,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:20,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:33:20,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:33:20,536 INFO L87 Difference]: Start difference. First operand 113 states and 142 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:33:20,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:20,590 INFO L93 Difference]: Finished difference Result 147 states and 185 transitions. [2024-11-18 09:33:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:33:20,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2024-11-18 09:33:20,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:20,591 INFO L225 Difference]: With dead ends: 147 [2024-11-18 09:33:20,591 INFO L226 Difference]: Without dead ends: 121 [2024-11-18 09:33:20,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:33:20,592 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 5 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:20,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 597 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:33:20,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-18 09:33:20,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2024-11-18 09:33:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 108 states have (on average 1.2592592592592593) internal successors, (136), 110 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 09:33:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 149 transitions. [2024-11-18 09:33:20,600 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 149 transitions. Word has length 74 [2024-11-18 09:33:20,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:20,601 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 149 transitions. [2024-11-18 09:33:20,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:33:20,601 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 149 transitions. [2024-11-18 09:33:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 09:33:20,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:20,602 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:20,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-18 09:33:20,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 09:33:20,806 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:20,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:20,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1669567562, now seen corresponding path program 1 times [2024-11-18 09:33:20,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:20,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025873042] [2024-11-18 09:33:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:20,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:33:20,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:20,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025873042] [2024-11-18 09:33:20,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025873042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:33:20,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260414987] [2024-11-18 09:33:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:20,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:33:20,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:20,908 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:33:20,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 09:33:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:21,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 09:33:21,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 09:33:21,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:33:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 09:33:21,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260414987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:33:21,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:33:21,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 10] total 17 [2024-11-18 09:33:21,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241902340] [2024-11-18 09:33:21,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:33:21,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 09:33:21,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:21,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 09:33:21,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-11-18 09:33:21,304 INFO L87 Difference]: Start difference. First operand 119 states and 149 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 15 states have internal predecessors, (84), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 09:33:21,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:21,539 INFO L93 Difference]: Finished difference Result 210 states and 262 transitions. [2024-11-18 09:33:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 09:33:21,539 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 15 states have internal predecessors, (84), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 76 [2024-11-18 09:33:21,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:21,539 INFO L225 Difference]: With dead ends: 210 [2024-11-18 09:33:21,539 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 09:33:21,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 137 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2024-11-18 09:33:21,540 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 39 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:21,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 293 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:33:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 09:33:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 09:33:21,541 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) [2024-11-18 09:33:21,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 09:33:21,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2024-11-18 09:33:21,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:21,541 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 09:33:21,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 15 states have internal predecessors, (84), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 09:33:21,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 09:33:21,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 09:33:21,544 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 09:33:21,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 09:33:21,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 09:33:21,747 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:21,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 09:33:21,962 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 09:33:21,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:33:21 BoogieIcfgContainer [2024-11-18 09:33:21,978 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 09:33:21,978 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 09:33:21,978 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 09:33:21,979 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 09:33:21,979 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:33:12" (3/4) ... [2024-11-18 09:33:21,981 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 09:33:21,984 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2024-11-18 09:33:21,985 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-18 09:33:21,990 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-18 09:33:21,990 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-18 09:33:21,990 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 09:33:21,991 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 09:33:22,013 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((e == \old(e)) && (m <= 33554431)) && ((m == 1) || (m == \old(m)))) || (((((e <= \old(e)) && ((m % 2) == 0)) && ((m / 2) <= 4294967295)) && (0 <= (m / 2))) && (m <= 33554431))) && (0 < \old(m))) [2024-11-18 09:33:22,013 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(e) <= e) && (0 < \old(m))) && (\old(m) != 1)) [2024-11-18 09:33:22,035 WARN L140 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(e) <= e) && (0 < \old(m))) && (\old(m) != 1)) [2024-11-18 09:33:22,035 WARN L140 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((e == \old(e)) && (m <= 33554431)) && ((m == 1) || (m == \old(m)))) || (((((e <= \old(e)) && ((m % 2) == 0)) && ((m / 2) <= 4294967295)) && (0 <= (m / 2))) && (m <= 33554431))) && (0 < \old(m))) [2024-11-18 09:33:22,076 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 09:33:22,077 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 09:33:22,077 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 09:33:22,078 INFO L158 Benchmark]: Toolchain (without parser) took 10508.01ms. Allocated memory was 138.4MB in the beginning and 234.9MB in the end (delta: 96.5MB). Free memory was 67.5MB in the beginning and 137.0MB in the end (delta: -69.6MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2024-11-18 09:33:22,078 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 101.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 09:33:22,078 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.00ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 67.5MB in the beginning and 153.8MB in the end (delta: -86.3MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2024-11-18 09:33:22,078 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.42ms. Allocated memory is still 184.5MB. Free memory was 153.7MB in the beginning and 153.2MB in the end (delta: 544.8kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-18 09:33:22,078 INFO L158 Benchmark]: Boogie Preprocessor took 41.37ms. Allocated memory is still 184.5MB. Free memory was 153.2MB in the beginning and 151.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 09:33:22,078 INFO L158 Benchmark]: RCFGBuilder took 508.02ms. Allocated memory is still 184.5MB. Free memory was 151.1MB in the beginning and 129.9MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-18 09:33:22,079 INFO L158 Benchmark]: TraceAbstraction took 9506.71ms. Allocated memory was 184.5MB in the beginning and 234.9MB in the end (delta: 50.3MB). Free memory was 129.0MB in the beginning and 143.4MB in the end (delta: -14.4MB). Peak memory consumption was 116.3MB. Max. memory is 16.1GB. [2024-11-18 09:33:22,079 INFO L158 Benchmark]: Witness Printer took 98.83ms. Allocated memory is still 234.9MB. Free memory was 143.4MB in the beginning and 137.0MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-18 09:33:22,080 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 101.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.00ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 67.5MB in the beginning and 153.8MB in the end (delta: -86.3MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.42ms. Allocated memory is still 184.5MB. Free memory was 153.7MB in the beginning and 153.2MB in the end (delta: 544.8kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.37ms. Allocated memory is still 184.5MB. Free memory was 153.2MB in the beginning and 151.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 508.02ms. Allocated memory is still 184.5MB. Free memory was 151.1MB in the beginning and 129.9MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 9506.71ms. Allocated memory was 184.5MB in the beginning and 234.9MB in the end (delta: 50.3MB). Free memory was 129.0MB in the beginning and 143.4MB in the end (delta: -14.4MB). Peak memory consumption was 116.3MB. Max. memory is 16.1GB. * Witness Printer took 98.83ms. Allocated memory is still 234.9MB. Free memory was 143.4MB in the beginning and 137.0MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. 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: 17]: 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, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.2s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 567 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 564 mSDsluCounter, 7771 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6228 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1520 IncrementalHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 1543 mSDtfsCounter, 1520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1196 GetRequests, 1047 SyntacticMatches, 5 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=17, InterpolantAutomatonStates: 130, 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, 18 MinimizatonAttempts, 176 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1749 NumberOfCodeBlocks, 1714 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 2072 ConstructedInterpolants, 0 QuantifiedInterpolants, 3527 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2280 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 37 InterpolantComputations, 12 PerfectInterpolantSequences, 1013/1205 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: 37]: Loop Invariant Derived loop invariant: (((((e == \old(e)) && (m <= 33554431)) && ((m == 1) || (m == \old(m)))) || (((((e <= \old(e)) && ((m % 2) == 0)) && ((m / 2) <= 4294967295)) && (0 <= (m / 2))) && (m <= 33554431))) && (0 < \old(m))) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((\old(e) <= e) && (0 < \old(m))) && (\old(m) != 1)) - ProcedureContractResult [Line: 24]: Procedure Contract for base2flt Derived contract for procedure base2flt. Ensures: ((\result == 0) || (0 < m)) - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-18 09:33:22,108 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