./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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_5a.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 f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:01:07,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:01:07,799 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:01:07,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:01:07,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:01:07,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:01:07,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:01:07,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:01:07,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:01:07,833 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:01:07,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:01:07,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:01:07,834 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:01:07,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:01:07,835 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:01:07,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:01:07,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:01:07,838 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:01:07,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:01:07,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:01:07,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:01:07,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:01:07,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:01:07,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:01:07,843 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:01:07,843 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:01:07,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:01:07,844 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:01:07,844 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:01:07,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:01:07,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:01:07,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:01:07,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:01:07,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:01:07,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:01:07,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:01:07,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:01:07,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:01:07,848 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:01:07,848 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:01:07,849 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:01:07,849 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:01:07,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2024-11-16 03:01:08,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:01:08,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:01:08,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:01:08,133 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:01:08,134 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:01:08,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2024-11-16 03:01:09,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:01:09,862 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:01:09,865 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2024-11-16 03:01:09,875 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a642e049/46b60fd4eaad4644875bfd77ae4ba8c2/FLAG82ee9b57e [2024-11-16 03:01:09,886 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a642e049/46b60fd4eaad4644875bfd77ae4ba8c2 [2024-11-16 03:01:09,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:01:09,890 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:01:09,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:01:09,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:01:09,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:01:09,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:01:09" (1/1) ... [2024-11-16 03:01:09,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5353e616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:09, skipping insertion in model container [2024-11-16 03:01:09,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:01:09" (1/1) ... [2024-11-16 03:01:09,921 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:01:10,093 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_5a.c.cil.c[728,741] [2024-11-16 03:01:10,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:01:10,175 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:01:10,189 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_5a.c.cil.c[728,741] [2024-11-16 03:01:10,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:01:10,253 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:01:10,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10 WrapperNode [2024-11-16 03:01:10,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:01:10,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:01:10,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:01:10,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:01:10,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (1/1) ... [2024-11-16 03:01:10,280 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (1/1) ... [2024-11-16 03:01:10,317 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 147 [2024-11-16 03:01:10,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:01:10,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:01:10,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:01:10,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:01:10,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (1/1) ... [2024-11-16 03:01:10,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (1/1) ... [2024-11-16 03:01:10,330 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (1/1) ... [2024-11-16 03:01:10,342 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]. [2024-11-16 03:01:10,346 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (1/1) ... [2024-11-16 03:01:10,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (1/1) ... [2024-11-16 03:01:10,352 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (1/1) ... [2024-11-16 03:01:10,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (1/1) ... [2024-11-16 03:01:10,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (1/1) ... [2024-11-16 03:01:10,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (1/1) ... [2024-11-16 03:01:10,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:01:10,357 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:01:10,358 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:01:10,358 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:01:10,360 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (1/1) ... [2024-11-16 03:01:10,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:01:10,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:10,395 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) [2024-11-16 03:01:10,400 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 [2024-11-16 03:01:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:01:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:01:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-16 03:01:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-16 03:01:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:01:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:01:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 03:01:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 03:01:10,531 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:01:10,537 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:01:10,909 INFO L? ?]: Removed 62 outVars from TransFormulas that were not future-live. [2024-11-16 03:01:10,913 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:01:10,959 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:01:10,960 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:01:10,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:01:10 BoogieIcfgContainer [2024-11-16 03:01:10,960 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:01:10,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:01:10,963 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:01:10,965 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:01:10,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:01:09" (1/3) ... [2024-11-16 03:01:10,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267da6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:01:10, skipping insertion in model container [2024-11-16 03:01:10,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:01:10" (2/3) ... [2024-11-16 03:01:10,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267da6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:01:10, skipping insertion in model container [2024-11-16 03:01:10,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:01:10" (3/3) ... [2024-11-16 03:01:10,968 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2024-11-16 03:01:10,983 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:01:10,983 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:01:11,038 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:01:11,045 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;@6541d766, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:01:11,045 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:01:11,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 76 states have internal predecessors, (110), 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) [2024-11-16 03:01:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 03:01:11,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:11,059 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] [2024-11-16 03:01:11,059 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:11,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash 455082203, now seen corresponding path program 1 times [2024-11-16 03:01:11,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:11,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481260780] [2024-11-16 03:01:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:11,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:11,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:11,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 03:01:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:11,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 03:01:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 03:01:11,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:11,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481260780] [2024-11-16 03:01:11,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481260780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:11,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:01:11,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:01:11,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345048348] [2024-11-16 03:01:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:11,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:01:11,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:11,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:01:11,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:01:11,493 INFO L87 Difference]: Start difference. First operand has 83 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 76 states have internal predecessors, (110), 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 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-16 03:01:11,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:11,558 INFO L93 Difference]: Finished difference Result 190 states and 284 transitions. [2024-11-16 03:01:11,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:01:11,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 43 [2024-11-16 03:01:11,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:11,567 INFO L225 Difference]: With dead ends: 190 [2024-11-16 03:01:11,567 INFO L226 Difference]: Without dead ends: 76 [2024-11-16 03:01:11,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:01:11,574 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 35 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:11,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 205 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 03:01:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-16 03:01:11,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-16 03:01:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 69 states have internal predecessors, (95), 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) [2024-11-16 03:01:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 104 transitions. [2024-11-16 03:01:11,629 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 104 transitions. Word has length 43 [2024-11-16 03:01:11,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:11,630 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 104 transitions. [2024-11-16 03:01:11,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-16 03:01:11,630 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 104 transitions. [2024-11-16 03:01:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-16 03:01:11,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:11,636 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, 1] [2024-11-16 03:01:11,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:01:11,637 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:11,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:11,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1801799614, now seen corresponding path program 1 times [2024-11-16 03:01:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:11,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402402728] [2024-11-16 03:01:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:11,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:11,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:11,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:11,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 03:01:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:11,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 03:01:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 03:01:11,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:11,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402402728] [2024-11-16 03:01:11,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402402728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:11,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:01:11,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 03:01:11,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281546743] [2024-11-16 03:01:11,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:11,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:01:11,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:11,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:01:11,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:01:11,866 INFO L87 Difference]: Start difference. First operand 76 states and 104 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2024-11-16 03:01:11,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:11,905 INFO L93 Difference]: Finished difference Result 114 states and 156 transitions. [2024-11-16 03:01:11,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:01:11,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 45 [2024-11-16 03:01:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:11,907 INFO L225 Difference]: With dead ends: 114 [2024-11-16 03:01:11,907 INFO L226 Difference]: Without dead ends: 76 [2024-11-16 03:01:11,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:01:11,909 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 35 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:11,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 286 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 03:01:11,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-16 03:01:11,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-16 03:01:11,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 69 states have internal predecessors, (94), 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) [2024-11-16 03:01:11,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 103 transitions. [2024-11-16 03:01:11,922 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 103 transitions. Word has length 45 [2024-11-16 03:01:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:11,926 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 103 transitions. [2024-11-16 03:01:11,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2024-11-16 03:01:11,926 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 103 transitions. [2024-11-16 03:01:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-16 03:01:11,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:11,928 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, 1] [2024-11-16 03:01:11,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:01:11,928 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:11,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:11,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1296240989, now seen corresponding path program 1 times [2024-11-16 03:01:11,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:11,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874049741] [2024-11-16 03:01:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:11,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:12,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:12,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:12,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 03:01:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:12,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 03:01:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:01:12,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:12,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874049741] [2024-11-16 03:01:12,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874049741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:12,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669485099] [2024-11-16 03:01:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:12,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:12,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:12,109 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) [2024-11-16 03:01:12,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:01:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:12,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 03:01:12,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 03:01:12,254 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:01:12,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669485099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:12,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:01:12,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-16 03:01:12,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963182359] [2024-11-16 03:01:12,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:12,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:01:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:12,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:01:12,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:01:12,260 INFO L87 Difference]: Start difference. First operand 76 states and 103 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2024-11-16 03:01:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:12,396 INFO L93 Difference]: Finished difference Result 175 states and 241 transitions. [2024-11-16 03:01:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 03:01:12,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 45 [2024-11-16 03:01:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:12,400 INFO L225 Difference]: With dead ends: 175 [2024-11-16 03:01:12,400 INFO L226 Difference]: Without dead ends: 102 [2024-11-16 03:01:12,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:01:12,402 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 26 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:12,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 229 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 03:01:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-16 03:01:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2024-11-16 03:01:12,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 84 states have (on average 1.3452380952380953) internal successors, (113), 84 states have internal predecessors, (113), 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) [2024-11-16 03:01:12,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 124 transitions. [2024-11-16 03:01:12,421 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 124 transitions. Word has length 45 [2024-11-16 03:01:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:12,422 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 124 transitions. [2024-11-16 03:01:12,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2024-11-16 03:01:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 124 transitions. [2024-11-16 03:01:12,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 03:01:12,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:12,424 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] [2024-11-16 03:01:12,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 03:01:12,624 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 [2024-11-16 03:01:12,625 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:12,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash -597412195, now seen corresponding path program 1 times [2024-11-16 03:01:12,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:12,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156812447] [2024-11-16 03:01:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:12,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:12,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:12,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:12,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 03:01:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:12,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 03:01:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:01:12,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156812447] [2024-11-16 03:01:12,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156812447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249489678] [2024-11-16 03:01:12,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:12,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:12,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:12,765 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) [2024-11-16 03:01:12,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 03:01:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:12,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:01:12,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 03:01:12,882 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:01:12,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249489678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:12,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:01:12,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-16 03:01:12,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096040104] [2024-11-16 03:01:12,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:12,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:01:12,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:12,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:01:12,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:01:12,888 INFO L87 Difference]: Start difference. First operand 92 states and 124 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-16 03:01:12,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:12,967 INFO L93 Difference]: Finished difference Result 194 states and 264 transitions. [2024-11-16 03:01:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:01:12,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 50 [2024-11-16 03:01:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:12,969 INFO L225 Difference]: With dead ends: 194 [2024-11-16 03:01:12,970 INFO L226 Difference]: Without dead ends: 109 [2024-11-16 03:01:12,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:01:12,972 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 18 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:12,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 241 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 03:01:12,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-16 03:01:12,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2024-11-16 03:01:12,989 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) [2024-11-16 03:01:12,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 133 transitions. [2024-11-16 03:01:12,994 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 133 transitions. Word has length 50 [2024-11-16 03:01:12,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:12,994 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 133 transitions. [2024-11-16 03:01:12,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-16 03:01:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 133 transitions. [2024-11-16 03:01:12,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 03:01:12,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:12,996 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] [2024-11-16 03:01:13,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 03:01:13,197 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 [2024-11-16 03:01:13,197 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:13,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:13,198 INFO L85 PathProgramCache]: Analyzing trace with hash 945873509, now seen corresponding path program 1 times [2024-11-16 03:01:13,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:13,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640422380] [2024-11-16 03:01:13,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:13,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:13,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:13,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:13,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 03:01:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:13,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 03:01:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:01:13,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:13,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640422380] [2024-11-16 03:01:13,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640422380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:13,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463064923] [2024-11-16 03:01:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:13,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:13,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:13,373 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) [2024-11-16 03:01:13,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 03:01:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:13,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:01:13,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 03:01:13,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:01:13,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463064923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:13,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:01:13,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-16 03:01:13,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749329080] [2024-11-16 03:01:13,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:13,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:01:13,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:13,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:01:13,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:01:13,472 INFO L87 Difference]: Start difference. First operand 99 states and 133 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-16 03:01:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:13,541 INFO L93 Difference]: Finished difference Result 202 states and 275 transitions. [2024-11-16 03:01:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:01:13,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 51 [2024-11-16 03:01:13,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:13,543 INFO L225 Difference]: With dead ends: 202 [2024-11-16 03:01:13,543 INFO L226 Difference]: Without dead ends: 110 [2024-11-16 03:01:13,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:01:13,544 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 20 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:13,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 243 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 03:01:13,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-16 03:01:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2024-11-16 03:01:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 91 states have (on average 1.3406593406593406) internal successors, (122), 92 states have internal predecessors, (122), 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) [2024-11-16 03:01:13,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 135 transitions. [2024-11-16 03:01:13,564 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 135 transitions. Word has length 51 [2024-11-16 03:01:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:13,565 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 135 transitions. [2024-11-16 03:01:13,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-16 03:01:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 135 transitions. [2024-11-16 03:01:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-16 03:01:13,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:13,568 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-11-16 03:01:13,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 03:01:13,768 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 [2024-11-16 03:01:13,769 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:13,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:13,769 INFO L85 PathProgramCache]: Analyzing trace with hash 285567096, now seen corresponding path program 1 times [2024-11-16 03:01:13,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:13,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984713335] [2024-11-16 03:01:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:13,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:13,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:13,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:13,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:01:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:13,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 03:01:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:01:13,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:13,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984713335] [2024-11-16 03:01:13,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984713335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:13,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027983539] [2024-11-16 03:01:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:13,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:13,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:13,877 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) [2024-11-16 03:01:13,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 03:01:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:13,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 03:01:13,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 03:01:13,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:01:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:01:14,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027983539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 03:01:14,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 03:01:14,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-16 03:01:14,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729292182] [2024-11-16 03:01:14,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 03:01:14,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 03:01:14,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:14,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 03:01:14,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 03:01:14,137 INFO L87 Difference]: Start difference. First operand 100 states and 135 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-11-16 03:01:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:14,283 INFO L93 Difference]: Finished difference Result 262 states and 363 transitions. [2024-11-16 03:01:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 03:01:14,283 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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 55 [2024-11-16 03:01:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:14,285 INFO L225 Difference]: With dead ends: 262 [2024-11-16 03:01:14,285 INFO L226 Difference]: Without dead ends: 169 [2024-11-16 03:01:14,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-16 03:01:14,286 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 107 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:14,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 543 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 03:01:14,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-16 03:01:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 120. [2024-11-16 03:01:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 111 states have (on average 1.3603603603603605) internal successors, (151), 112 states have internal predecessors, (151), 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) [2024-11-16 03:01:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 164 transitions. [2024-11-16 03:01:14,306 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 164 transitions. Word has length 55 [2024-11-16 03:01:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:14,307 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 164 transitions. [2024-11-16 03:01:14,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-11-16 03:01:14,307 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 164 transitions. [2024-11-16 03:01:14,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 03:01:14,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:14,308 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] [2024-11-16 03:01:14,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 03:01:14,513 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 [2024-11-16 03:01:14,514 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:14,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:14,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1524329312, now seen corresponding path program 1 times [2024-11-16 03:01:14,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:14,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021669212] [2024-11-16 03:01:14,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:14,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:14,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:14,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:14,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 03:01:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:14,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 03:01:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-16 03:01:14,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021669212] [2024-11-16 03:01:14,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021669212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099782080] [2024-11-16 03:01:14,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:14,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:14,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:14,579 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) [2024-11-16 03:01:14,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 03:01:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:14,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:01:14,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-16 03:01:14,672 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:01:14,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099782080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:14,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:01:14,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-16 03:01:14,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213400509] [2024-11-16 03:01:14,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:14,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:01:14,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:14,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:01:14,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:01:14,676 INFO L87 Difference]: Start difference. First operand 120 states and 164 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-16 03:01:14,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:14,721 INFO L93 Difference]: Finished difference Result 238 states and 332 transitions. [2024-11-16 03:01:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:01:14,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 56 [2024-11-16 03:01:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:14,723 INFO L225 Difference]: With dead ends: 238 [2024-11-16 03:01:14,724 INFO L226 Difference]: Without dead ends: 125 [2024-11-16 03:01:14,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:01:14,725 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 11 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:14,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 173 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 03:01:14,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-16 03:01:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2024-11-16 03:01:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 108 states have (on average 1.3425925925925926) internal successors, (145), 109 states have internal predecessors, (145), 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) [2024-11-16 03:01:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 158 transitions. [2024-11-16 03:01:14,735 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 158 transitions. Word has length 56 [2024-11-16 03:01:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:14,736 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 158 transitions. [2024-11-16 03:01:14,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-16 03:01:14,736 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 158 transitions. [2024-11-16 03:01:14,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 03:01:14,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:14,737 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] [2024-11-16 03:01:14,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 03:01:14,937 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 [2024-11-16 03:01:14,938 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:14,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:14,938 INFO L85 PathProgramCache]: Analyzing trace with hash -112831238, now seen corresponding path program 1 times [2024-11-16 03:01:14,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:14,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497428496] [2024-11-16 03:01:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:14,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:15,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:15,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:15,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 03:01:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:15,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 03:01:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:01:15,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:15,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497428496] [2024-11-16 03:01:15,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497428496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795870002] [2024-11-16 03:01:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:15,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:15,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:15,077 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) [2024-11-16 03:01:15,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 03:01:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:15,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 03:01:15,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:15,188 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 03:01:15,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:01:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:01:15,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795870002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 03:01:15,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 03:01:15,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-16 03:01:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292351361] [2024-11-16 03:01:15,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 03:01:15,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 03:01:15,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 03:01:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 03:01:15,305 INFO L87 Difference]: Start difference. First operand 117 states and 158 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 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) [2024-11-16 03:01:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:15,429 INFO L93 Difference]: Finished difference Result 285 states and 392 transitions. [2024-11-16 03:01:15,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 03:01:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 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 56 [2024-11-16 03:01:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:15,431 INFO L225 Difference]: With dead ends: 285 [2024-11-16 03:01:15,431 INFO L226 Difference]: Without dead ends: 175 [2024-11-16 03:01:15,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-16 03:01:15,432 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 155 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:15,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 411 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 03:01:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-16 03:01:15,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 132. [2024-11-16 03:01:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 123 states have (on average 1.3495934959349594) internal successors, (166), 124 states have internal predecessors, (166), 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) [2024-11-16 03:01:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 179 transitions. [2024-11-16 03:01:15,450 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 179 transitions. Word has length 56 [2024-11-16 03:01:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:15,451 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 179 transitions. [2024-11-16 03:01:15,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 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) [2024-11-16 03:01:15,451 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 179 transitions. [2024-11-16 03:01:15,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 03:01:15,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:15,452 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] [2024-11-16 03:01:15,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 03:01:15,656 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 [2024-11-16 03:01:15,657 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:15,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:15,657 INFO L85 PathProgramCache]: Analyzing trace with hash 586371372, now seen corresponding path program 1 times [2024-11-16 03:01:15,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:15,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146797773] [2024-11-16 03:01:15,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:15,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:15,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:15,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:15,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 03:01:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:15,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 03:01:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-16 03:01:15,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:15,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146797773] [2024-11-16 03:01:15,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146797773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:15,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431672363] [2024-11-16 03:01:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:15,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:15,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:15,724 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) [2024-11-16 03:01:15,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 03:01:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:15,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:01:15,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-16 03:01:15,802 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:01:15,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431672363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:15,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:01:15,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-16 03:01:15,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798007021] [2024-11-16 03:01:15,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:15,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:01:15,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:15,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:01:15,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:01:15,804 INFO L87 Difference]: Start difference. First operand 132 states and 179 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-16 03:01:15,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:15,857 INFO L93 Difference]: Finished difference Result 265 states and 366 transitions. [2024-11-16 03:01:15,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:01:15,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 56 [2024-11-16 03:01:15,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:15,858 INFO L225 Difference]: With dead ends: 265 [2024-11-16 03:01:15,859 INFO L226 Difference]: Without dead ends: 140 [2024-11-16 03:01:15,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:01:15,859 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:15,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 174 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 03:01:15,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-16 03:01:15,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 133. [2024-11-16 03:01:15,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 124 states have (on average 1.3387096774193548) internal successors, (166), 125 states have internal predecessors, (166), 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) [2024-11-16 03:01:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 179 transitions. [2024-11-16 03:01:15,870 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 179 transitions. Word has length 56 [2024-11-16 03:01:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:15,870 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 179 transitions. [2024-11-16 03:01:15,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-16 03:01:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 179 transitions. [2024-11-16 03:01:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 03:01:15,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:15,871 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] [2024-11-16 03:01:15,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 03:01:16,072 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 [2024-11-16 03:01:16,072 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:16,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:16,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1103568233, now seen corresponding path program 1 times [2024-11-16 03:01:16,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:16,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708629452] [2024-11-16 03:01:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:16,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:16,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:16,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:16,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 03:01:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:16,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:01:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-16 03:01:16,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:16,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708629452] [2024-11-16 03:01:16,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708629452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:16,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196650438] [2024-11-16 03:01:16,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:16,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:16,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:16,175 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) [2024-11-16 03:01:16,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 03:01:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:16,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 03:01:16,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-16 03:01:16,315 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:01:16,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196650438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:16,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:01:16,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 03:01:16,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73403904] [2024-11-16 03:01:16,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:16,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:01:16,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:16,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:01:16,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:01:16,318 INFO L87 Difference]: Start difference. First operand 133 states and 179 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-16 03:01:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:16,376 INFO L93 Difference]: Finished difference Result 266 states and 362 transitions. [2024-11-16 03:01:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:01:16,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 57 [2024-11-16 03:01:16,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:16,378 INFO L225 Difference]: With dead ends: 266 [2024-11-16 03:01:16,378 INFO L226 Difference]: Without dead ends: 140 [2024-11-16 03:01:16,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:01:16,379 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 8 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:16,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 183 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 03:01:16,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-16 03:01:16,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 132. [2024-11-16 03:01:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 123 states have (on average 1.3333333333333333) internal successors, (164), 124 states have internal predecessors, (164), 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) [2024-11-16 03:01:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 177 transitions. [2024-11-16 03:01:16,388 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 177 transitions. Word has length 57 [2024-11-16 03:01:16,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:16,388 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 177 transitions. [2024-11-16 03:01:16,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-16 03:01:16,388 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 177 transitions. [2024-11-16 03:01:16,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 03:01:16,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:16,389 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] [2024-11-16 03:01:16,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 03:01:16,590 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 [2024-11-16 03:01:16,590 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:16,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:16,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1174632157, now seen corresponding path program 1 times [2024-11-16 03:01:16,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:16,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689933561] [2024-11-16 03:01:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:16,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:16,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:16,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:16,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 03:01:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:16,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:01:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:01:16,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:16,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689933561] [2024-11-16 03:01:16,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689933561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:16,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175293390] [2024-11-16 03:01:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:16,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:16,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:16,724 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) [2024-11-16 03:01:16,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 03:01:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:16,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 03:01:16,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-16 03:01:16,851 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:01:16,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175293390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:16,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:01:16,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-16 03:01:16,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667982035] [2024-11-16 03:01:16,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:16,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 03:01:16,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 03:01:16,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-16 03:01:16,852 INFO L87 Difference]: Start difference. First operand 132 states and 177 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-16 03:01:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:16,933 INFO L93 Difference]: Finished difference Result 178 states and 240 transitions. [2024-11-16 03:01:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 03:01:16,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 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 57 [2024-11-16 03:01:16,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:16,935 INFO L225 Difference]: With dead ends: 178 [2024-11-16 03:01:16,935 INFO L226 Difference]: Without dead ends: 172 [2024-11-16 03:01:16,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-16 03:01:16,936 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 39 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:16,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 525 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 03:01:16,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-16 03:01:16,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2024-11-16 03:01:16,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 160 states have (on average 1.3375) internal successors, (214), 162 states have internal predecessors, (214), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-16 03:01:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 232 transitions. [2024-11-16 03:01:16,945 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 232 transitions. Word has length 57 [2024-11-16 03:01:16,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:16,946 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 232 transitions. [2024-11-16 03:01:16,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-16 03:01:16,946 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 232 transitions. [2024-11-16 03:01:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-16 03:01:16,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:16,947 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] [2024-11-16 03:01:16,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 03:01:17,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:17,148 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:17,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:17,148 INFO L85 PathProgramCache]: Analyzing trace with hash -440348038, now seen corresponding path program 1 times [2024-11-16 03:01:17,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:17,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717663079] [2024-11-16 03:01:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:17,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:17,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:17,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:17,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 03:01:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:17,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:01:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:01:17,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:17,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717663079] [2024-11-16 03:01:17,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717663079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:17,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871030505] [2024-11-16 03:01:17,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:17,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:17,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:17,255 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) [2024-11-16 03:01:17,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 03:01:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:17,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 03:01:17,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:01:17,414 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:01:17,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871030505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:17,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:01:17,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2024-11-16 03:01:17,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941920303] [2024-11-16 03:01:17,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:17,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 03:01:17,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 03:01:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-16 03:01:17,416 INFO L87 Difference]: Start difference. First operand 171 states and 232 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 03:01:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:17,502 INFO L93 Difference]: Finished difference Result 220 states and 300 transitions. [2024-11-16 03:01:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 03:01:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 59 [2024-11-16 03:01:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:17,504 INFO L225 Difference]: With dead ends: 220 [2024-11-16 03:01:17,504 INFO L226 Difference]: Without dead ends: 185 [2024-11-16 03:01:17,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-16 03:01:17,505 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 5 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:17,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 528 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 03:01:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-16 03:01:17,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 180. [2024-11-16 03:01:17,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 168 states have (on average 1.3214285714285714) internal successors, (222), 169 states have internal predecessors, (222), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-16 03:01:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 246 transitions. [2024-11-16 03:01:17,518 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 246 transitions. Word has length 59 [2024-11-16 03:01:17,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:17,518 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 246 transitions. [2024-11-16 03:01:17,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 03:01:17,519 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 246 transitions. [2024-11-16 03:01:17,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-16 03:01:17,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:17,520 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] [2024-11-16 03:01:17,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 03:01:17,723 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,SelfDestructingSolverStorable11 [2024-11-16 03:01:17,724 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:17,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash -733751045, now seen corresponding path program 1 times [2024-11-16 03:01:17,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:17,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215066592] [2024-11-16 03:01:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:17,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:17,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:17,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:17,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 03:01:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:17,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:01:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:01:17,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:17,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215066592] [2024-11-16 03:01:17,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215066592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:17,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851528248] [2024-11-16 03:01:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:17,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:17,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:17,843 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) [2024-11-16 03:01:17,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 03:01:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:17,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 03:01:17,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 03:01:17,996 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:01:17,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851528248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:17,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:01:17,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-16 03:01:17,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033441064] [2024-11-16 03:01:17,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:17,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 03:01:17,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:17,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 03:01:17,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 03:01:17,998 INFO L87 Difference]: Start difference. First operand 180 states and 246 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-16 03:01:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:18,099 INFO L93 Difference]: Finished difference Result 367 states and 505 transitions. [2024-11-16 03:01:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 03:01:18,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 59 [2024-11-16 03:01:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:18,102 INFO L225 Difference]: With dead ends: 367 [2024-11-16 03:01:18,102 INFO L226 Difference]: Without dead ends: 194 [2024-11-16 03:01:18,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:01:18,103 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 19 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:18,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 334 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 03:01:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-16 03:01:18,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 181. [2024-11-16 03:01:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 169 states have (on average 1.319526627218935) internal successors, (223), 170 states have internal predecessors, (223), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-16 03:01:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 247 transitions. [2024-11-16 03:01:18,113 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 247 transitions. Word has length 59 [2024-11-16 03:01:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:18,113 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 247 transitions. [2024-11-16 03:01:18,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-16 03:01:18,114 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 247 transitions. [2024-11-16 03:01:18,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 03:01:18,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:18,115 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] [2024-11-16 03:01:18,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 03:01:18,319 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,SelfDestructingSolverStorable12 [2024-11-16 03:01:18,320 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:18,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:18,320 INFO L85 PathProgramCache]: Analyzing trace with hash -117879888, now seen corresponding path program 1 times [2024-11-16 03:01:18,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:18,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715517937] [2024-11-16 03:01:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:18,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:18,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:18,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:18,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 03:01:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:18,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 03:01:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:18,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-16 03:01:18,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:18,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715517937] [2024-11-16 03:01:18,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715517937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:18,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503110915] [2024-11-16 03:01:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:18,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:18,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:18,528 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) [2024-11-16 03:01:18,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 03:01:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:18,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 03:01:18,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-16 03:01:18,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:01:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 03:01:18,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503110915] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:18,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 03:01:18,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 9] total 12 [2024-11-16 03:01:18,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216999178] [2024-11-16 03:01:18,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:18,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 03:01:18,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:18,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 03:01:18,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-16 03:01:18,718 INFO L87 Difference]: Start difference. First operand 181 states and 247 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-11-16 03:01:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:18,777 INFO L93 Difference]: Finished difference Result 197 states and 264 transitions. [2024-11-16 03:01:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 03:01:18,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 60 [2024-11-16 03:01:18,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:18,779 INFO L225 Difference]: With dead ends: 197 [2024-11-16 03:01:18,779 INFO L226 Difference]: Without dead ends: 190 [2024-11-16 03:01:18,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-16 03:01:18,780 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:18,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 03:01:18,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-16 03:01:18,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-16 03:01:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 178 states have (on average 1.3089887640449438) internal successors, (233), 179 states have internal predecessors, (233), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-16 03:01:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 257 transitions. [2024-11-16 03:01:18,790 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 257 transitions. Word has length 60 [2024-11-16 03:01:18,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:18,790 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 257 transitions. [2024-11-16 03:01:18,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-11-16 03:01:18,790 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 257 transitions. [2024-11-16 03:01:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 03:01:18,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:18,791 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] [2024-11-16 03:01:18,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 03:01:18,995 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,SelfDestructingSolverStorable13 [2024-11-16 03:01:18,996 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:18,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:18,996 INFO L85 PathProgramCache]: Analyzing trace with hash 769623793, now seen corresponding path program 1 times [2024-11-16 03:01:18,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:18,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302363217] [2024-11-16 03:01:18,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:18,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:19,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:19,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:19,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 03:01:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:19,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 03:01:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 03:01:19,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:19,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302363217] [2024-11-16 03:01:19,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302363217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:19,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:01:19,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 03:01:19,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266536434] [2024-11-16 03:01:19,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:19,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 03:01:19,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:19,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 03:01:19,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:01:19,076 INFO L87 Difference]: Start difference. First operand 190 states and 257 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-11-16 03:01:19,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:19,120 INFO L93 Difference]: Finished difference Result 197 states and 263 transitions. [2024-11-16 03:01:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 03:01:19,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 60 [2024-11-16 03:01:19,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:19,122 INFO L225 Difference]: With dead ends: 197 [2024-11-16 03:01:19,122 INFO L226 Difference]: Without dead ends: 178 [2024-11-16 03:01:19,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:01:19,123 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:19,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 463 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 03:01:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-16 03:01:19,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-16 03:01:19,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 166 states have (on average 1.3072289156626506) internal successors, (217), 168 states have internal predecessors, (217), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-16 03:01:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 238 transitions. [2024-11-16 03:01:19,132 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 238 transitions. Word has length 60 [2024-11-16 03:01:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:19,132 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 238 transitions. [2024-11-16 03:01:19,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-11-16 03:01:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 238 transitions. [2024-11-16 03:01:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 03:01:19,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:19,133 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] [2024-11-16 03:01:19,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 03:01:19,133 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:19,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:19,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1978844006, now seen corresponding path program 1 times [2024-11-16 03:01:19,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:19,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632693906] [2024-11-16 03:01:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:19,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:19,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:19,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:19,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 03:01:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:19,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 03:01:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 03:01:19,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:19,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632693906] [2024-11-16 03:01:19,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632693906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:19,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547752052] [2024-11-16 03:01:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:19,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:19,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:19,332 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) [2024-11-16 03:01:19,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 03:01:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:19,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 03:01:19,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 03:01:19,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:01:19,633 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 03:01:19,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547752052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 03:01:19,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 03:01:19,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 19 [2024-11-16 03:01:19,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020656769] [2024-11-16 03:01:19,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 03:01:19,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 03:01:19,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:19,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 03:01:19,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-16 03:01:19,635 INFO L87 Difference]: Start difference. First operand 178 states and 238 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 15 states have internal predecessors, (61), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-16 03:01:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:19,794 INFO L93 Difference]: Finished difference Result 229 states and 307 transitions. [2024-11-16 03:01:19,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 03:01:19,794 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 15 states have internal predecessors, (61), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 64 [2024-11-16 03:01:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:19,795 INFO L225 Difference]: With dead ends: 229 [2024-11-16 03:01:19,795 INFO L226 Difference]: Without dead ends: 180 [2024-11-16 03:01:19,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-16 03:01:19,796 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 92 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:19,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 1184 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 03:01:19,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-16 03:01:19,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 147. [2024-11-16 03:01:19,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 133 states have (on average 1.2781954887218046) internal successors, (170), 138 states have internal predecessors, (170), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-16 03:01:19,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 194 transitions. [2024-11-16 03:01:19,808 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 194 transitions. Word has length 64 [2024-11-16 03:01:19,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:19,808 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 194 transitions. [2024-11-16 03:01:19,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 15 states have internal predecessors, (61), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-16 03:01:19,809 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 194 transitions. [2024-11-16 03:01:19,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 03:01:19,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:19,810 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, 1, 1, 1, 1, 1, 1] [2024-11-16 03:01:19,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 03:01:20,011 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,SelfDestructingSolverStorable15 [2024-11-16 03:01:20,012 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:20,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:20,012 INFO L85 PathProgramCache]: Analyzing trace with hash 314358458, now seen corresponding path program 1 times [2024-11-16 03:01:20,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:20,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092604184] [2024-11-16 03:01:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:20,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:20,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:20,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:20,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 03:01:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:20,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 03:01:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 03:01:20,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:20,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092604184] [2024-11-16 03:01:20,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092604184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:01:20,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:01:20,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 03:01:20,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816584984] [2024-11-16 03:01:20,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:01:20,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 03:01:20,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 03:01:20,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:01:20,152 INFO L87 Difference]: Start difference. First operand 147 states and 194 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-11-16 03:01:20,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:20,215 INFO L93 Difference]: Finished difference Result 189 states and 246 transitions. [2024-11-16 03:01:20,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 03:01:20,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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 71 [2024-11-16 03:01:20,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:20,217 INFO L225 Difference]: With dead ends: 189 [2024-11-16 03:01:20,217 INFO L226 Difference]: Without dead ends: 147 [2024-11-16 03:01:20,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:01:20,218 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 1 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:20,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 511 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 03:01:20,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-16 03:01:20,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 139. [2024-11-16 03:01:20,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 128 states have (on average 1.2890625) internal successors, (165), 131 states have internal predecessors, (165), 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) [2024-11-16 03:01:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 180 transitions. [2024-11-16 03:01:20,225 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 180 transitions. Word has length 71 [2024-11-16 03:01:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:20,226 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 180 transitions. [2024-11-16 03:01:20,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-11-16 03:01:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 180 transitions. [2024-11-16 03:01:20,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 03:01:20,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:20,227 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1] [2024-11-16 03:01:20,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 03:01:20,227 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:20,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:20,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1530849010, now seen corresponding path program 1 times [2024-11-16 03:01:20,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:20,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451618752] [2024-11-16 03:01:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:20,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:20,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:20,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:20,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 03:01:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:20,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 03:01:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 03:01:20,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:20,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451618752] [2024-11-16 03:01:20,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451618752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:20,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140256232] [2024-11-16 03:01:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:20,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:20,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:20,407 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:01:20,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 03:01:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:20,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 03:01:20,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 03:01:20,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:01:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 03:01:20,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140256232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 03:01:20,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 03:01:20,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-16 03:01:20,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359411472] [2024-11-16 03:01:20,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 03:01:20,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 03:01:20,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:20,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 03:01:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-16 03:01:20,641 INFO L87 Difference]: Start difference. First operand 139 states and 180 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 12 states have internal predecessors, (65), 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) [2024-11-16 03:01:20,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:20,774 INFO L93 Difference]: Finished difference Result 189 states and 243 transitions. [2024-11-16 03:01:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 03:01:20,774 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 12 states have internal predecessors, (65), 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 77 [2024-11-16 03:01:20,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:20,776 INFO L225 Difference]: With dead ends: 189 [2024-11-16 03:01:20,776 INFO L226 Difference]: Without dead ends: 142 [2024-11-16 03:01:20,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-16 03:01:20,777 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 1 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:20,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1032 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 03:01:20,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-16 03:01:20,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-16 03:01:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 130 states have (on average 1.2538461538461538) internal successors, (163), 134 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-16 03:01:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 178 transitions. [2024-11-16 03:01:20,786 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 178 transitions. Word has length 77 [2024-11-16 03:01:20,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:20,786 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 178 transitions. [2024-11-16 03:01:20,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 12 states have internal predecessors, (65), 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) [2024-11-16 03:01:20,787 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 178 transitions. [2024-11-16 03:01:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-16 03:01:20,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:20,788 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:01:20,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-16 03:01:20,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:20,991 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:20,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:20,991 INFO L85 PathProgramCache]: Analyzing trace with hash 124101562, now seen corresponding path program 1 times [2024-11-16 03:01:20,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:20,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960609510] [2024-11-16 03:01:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:20,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:21,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:21,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:21,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 03:01:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:21,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 03:01:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-16 03:01:21,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:21,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960609510] [2024-11-16 03:01:21,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960609510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:21,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124093987] [2024-11-16 03:01:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:21,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:21,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:21,149 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:01:21,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 03:01:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:21,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 03:01:21,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-16 03:01:21,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:01:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-16 03:01:21,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124093987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 03:01:21,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 03:01:21,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 8] total 16 [2024-11-16 03:01:21,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755431197] [2024-11-16 03:01:21,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 03:01:21,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 03:01:21,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:21,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 03:01:21,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-16 03:01:21,460 INFO L87 Difference]: Start difference. First operand 142 states and 178 transitions. Second operand has 16 states, 16 states have (on average 5.75) internal successors, (92), 14 states have internal predecessors, (92), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-16 03:01:21,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:21,819 INFO L93 Difference]: Finished difference Result 301 states and 377 transitions. [2024-11-16 03:01:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 03:01:21,820 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.75) internal successors, (92), 14 states have internal predecessors, (92), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 83 [2024-11-16 03:01:21,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:21,821 INFO L225 Difference]: With dead ends: 301 [2024-11-16 03:01:21,821 INFO L226 Difference]: Without dead ends: 166 [2024-11-16 03:01:21,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-16 03:01:21,822 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 41 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:21,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 854 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 03:01:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-16 03:01:21,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 132. [2024-11-16 03:01:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 120 states have (on average 1.2166666666666666) internal successors, (146), 122 states have internal predecessors, (146), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-16 03:01:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 162 transitions. [2024-11-16 03:01:21,832 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 162 transitions. Word has length 83 [2024-11-16 03:01:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:21,832 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 162 transitions. [2024-11-16 03:01:21,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.75) internal successors, (92), 14 states have internal predecessors, (92), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-16 03:01:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 162 transitions. [2024-11-16 03:01:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 03:01:21,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:01:21,833 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:01:21,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-16 03:01:22,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:22,034 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:01:22,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:01:22,035 INFO L85 PathProgramCache]: Analyzing trace with hash -835896482, now seen corresponding path program 1 times [2024-11-16 03:01:22,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:01:22,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131620363] [2024-11-16 03:01:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:22,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:01:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:22,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 03:01:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:22,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 03:01:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:22,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 03:01:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:22,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-16 03:01:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-16 03:01:22,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:01:22,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131620363] [2024-11-16 03:01:22,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131620363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:01:22,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005109892] [2024-11-16 03:01:22,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:01:22,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:22,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:01:22,247 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:01:22,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 03:01:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:01:22,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 03:01:22,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:01:22,509 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-16 03:01:22,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:01:22,663 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-16 03:01:22,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005109892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 03:01:22,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 03:01:22,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 17 [2024-11-16 03:01:22,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297735931] [2024-11-16 03:01:22,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 03:01:22,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 03:01:22,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:01:22,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 03:01:22,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-16 03:01:22,665 INFO L87 Difference]: Start difference. First operand 132 states and 162 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 15 states have internal predecessors, (98), 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) [2024-11-16 03:01:22,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:01:22,936 INFO L93 Difference]: Finished difference Result 242 states and 296 transitions. [2024-11-16 03:01:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 03:01:22,937 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 15 states have internal predecessors, (98), 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 88 [2024-11-16 03:01:22,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:01:22,937 INFO L225 Difference]: With dead ends: 242 [2024-11-16 03:01:22,937 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 03:01:22,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2024-11-16 03:01:22,939 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 48 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:01:22,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 320 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 03:01:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 03:01:22,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 03:01:22,940 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) [2024-11-16 03:01:22,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 03:01:22,940 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2024-11-16 03:01:22,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:01:22,940 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 03:01:22,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 15 states have internal predecessors, (98), 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) [2024-11-16 03:01:22,941 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 03:01:22,941 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 03:01:22,943 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 03:01:22,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-16 03:01:23,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:01:23,147 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:01:23,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 03:01:23,858 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 03:01:23,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:01:23 BoogieIcfgContainer [2024-11-16 03:01:23,880 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 03:01:23,881 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 03:01:23,881 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 03:01:23,881 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 03:01:23,881 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:01:10" (3/4) ... [2024-11-16 03:01:23,884 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 03:01:23,887 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure base2flt [2024-11-16 03:01:23,888 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-16 03:01:23,895 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-16 03:01:23,896 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-16 03:01:23,896 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 03:01:23,896 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 03:01:23,999 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 03:01:24,000 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 03:01:24,000 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 03:01:24,000 INFO L158 Benchmark]: Toolchain (without parser) took 14110.72ms. Allocated memory was 151.0MB in the beginning and 262.1MB in the end (delta: 111.1MB). Free memory was 92.8MB in the beginning and 175.1MB in the end (delta: -82.3MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2024-11-16 03:01:24,001 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 114.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 03:01:24,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.61ms. Allocated memory is still 151.0MB. Free memory was 92.8MB in the beginning and 77.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-16 03:01:24,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.98ms. Allocated memory is still 151.0MB. Free memory was 77.5MB in the beginning and 75.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 03:01:24,001 INFO L158 Benchmark]: Boogie Preprocessor took 38.07ms. Allocated memory is still 151.0MB. Free memory was 75.4MB in the beginning and 73.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 03:01:24,001 INFO L158 Benchmark]: IcfgBuilder took 602.99ms. Allocated memory is still 151.0MB. Free memory was 73.4MB in the beginning and 50.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-16 03:01:24,002 INFO L158 Benchmark]: TraceAbstraction took 12917.82ms. Allocated memory was 151.0MB in the beginning and 262.1MB in the end (delta: 111.1MB). Free memory was 49.7MB in the beginning and 182.4MB in the end (delta: -132.7MB). Peak memory consumption was 91.6MB. Max. memory is 16.1GB. [2024-11-16 03:01:24,002 INFO L158 Benchmark]: Witness Printer took 119.28ms. Allocated memory is still 262.1MB. Free memory was 182.4MB in the beginning and 175.1MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-16 03:01:24,004 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 114.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.61ms. Allocated memory is still 151.0MB. Free memory was 92.8MB in the beginning and 77.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.98ms. Allocated memory is still 151.0MB. Free memory was 77.5MB in the beginning and 75.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.07ms. Allocated memory is still 151.0MB. Free memory was 75.4MB in the beginning and 73.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 602.99ms. Allocated memory is still 151.0MB. Free memory was 73.4MB in the beginning and 50.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 12917.82ms. Allocated memory was 151.0MB in the beginning and 262.1MB in the end (delta: 111.1MB). Free memory was 49.7MB in the beginning and 182.4MB in the end (delta: -132.7MB). Peak memory consumption was 91.6MB. Max. memory is 16.1GB. * Witness Printer took 119.28ms. Allocated memory is still 262.1MB. Free memory was 182.4MB in the beginning and 175.1MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. 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, 83 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.1s, OverallIterations: 20, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 672 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 669 mSDsluCounter, 8780 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7017 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2143 IncrementalHoareTripleChecker+Invalid, 2197 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 1763 mSDtfsCounter, 2143 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1726 GetRequests, 1563 SyntacticMatches, 4 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=14, InterpolantAutomatonStates: 141, 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, 20 MinimizatonAttempts, 239 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 2165 NumberOfCodeBlocks, 2165 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 2605 ConstructedInterpolants, 0 QuantifiedInterpolants, 4764 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2829 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 43 InterpolantComputations, 14 PerfectInterpolantSequences, 1195/1435 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]: Location Invariant Derived location invariant: null - InvariantResult [Line: 57]: Location Invariant Derived location invariant: null - 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! [2024-11-16 03:01:24,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE