./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.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/recursive-simple/fibo_2calls_5-1.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 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 07:58:31,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 07:58:31,118 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 07:58:31,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 07:58:31,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 07:58:31,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 07:58:31,149 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 07:58:31,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 07:58:31,149 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 07:58:31,150 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 07:58:31,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 07:58:31,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 07:58:31,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 07:58:31,151 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 07:58:31,153 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 07:58:31,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 07:58:31,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 07:58:31,154 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 07:58:31,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 07:58:31,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 07:58:31,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 07:58:31,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 07:58:31,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 07:58:31,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 07:58:31,158 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 07:58:31,158 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 07:58:31,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 07:58:31,158 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 07:58:31,158 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 07:58:31,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 07:58:31,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 07:58:31,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 07:58:31,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 07:58:31,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 07:58:31,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 07:58:31,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 07:58:31,159 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 07:58:31,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 07:58:31,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 07:58:31,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 07:58:31,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 07:58:31,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 07:58:31,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2024-11-16 07:58:31,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 07:58:31,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 07:58:31,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 07:58:31,369 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 07:58:31,370 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 07:58:31,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-11-16 07:58:32,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 07:58:32,687 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 07:58:32,687 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-11-16 07:58:32,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f498a1e4/37616a0ef88a4789aed5e3ee41d486b4/FLAG5b4242346 [2024-11-16 07:58:33,109 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f498a1e4/37616a0ef88a4789aed5e3ee41d486b4 [2024-11-16 07:58:33,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 07:58:33,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 07:58:33,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 07:58:33,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 07:58:33,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 07:58:33,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161024b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33, skipping insertion in model container [2024-11-16 07:58:33,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 07:58:33,280 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/recursive-simple/fibo_2calls_5-1.c[946,959] [2024-11-16 07:58:33,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 07:58:33,293 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 07:58:33,307 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/recursive-simple/fibo_2calls_5-1.c[946,959] [2024-11-16 07:58:33,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 07:58:33,320 INFO L204 MainTranslator]: Completed translation [2024-11-16 07:58:33,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33 WrapperNode [2024-11-16 07:58:33,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 07:58:33,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 07:58:33,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 07:58:33,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 07:58:33,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,345 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-16 07:58:33,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 07:58:33,346 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 07:58:33,346 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 07:58:33,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 07:58:33,353 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,354 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,361 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 07:58:33,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,367 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,368 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,368 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 07:58:33,372 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 07:58:33,372 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 07:58:33,372 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 07:58:33,373 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (1/1) ... [2024-11-16 07:58:33,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 07:58:33,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:58:33,395 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 07:58:33,397 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 07:58:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 07:58:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 07:58:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-16 07:58:33,431 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-16 07:58:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-16 07:58:33,431 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-16 07:58:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 07:58:33,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 07:58:33,478 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 07:58:33,480 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 07:58:33,546 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L25: havoc #t~ret6;havoc #t~ret7; [2024-11-16 07:58:33,556 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: havoc #t~ret4;havoc #t~ret5; [2024-11-16 07:58:33,564 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-16 07:58:33,565 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 07:58:33,574 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 07:58:33,574 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 07:58:33,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:58:33 BoogieIcfgContainer [2024-11-16 07:58:33,575 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 07:58:33,577 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 07:58:33,577 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 07:58:33,580 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 07:58:33,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:58:33" (1/3) ... [2024-11-16 07:58:33,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff333cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:58:33, skipping insertion in model container [2024-11-16 07:58:33,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:58:33" (2/3) ... [2024-11-16 07:58:33,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff333cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:58:33, skipping insertion in model container [2024-11-16 07:58:33,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:58:33" (3/3) ... [2024-11-16 07:58:33,582 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2024-11-16 07:58:33,594 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 07:58:33,594 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 07:58:33,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 07:58:33,640 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;@7e0a3c7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 07:58:33,640 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 07:58:33,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 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 07:58:33,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 07:58:33,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:33,648 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:58:33,649 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:33,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:33,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1889766502, now seen corresponding path program 1 times [2024-11-16 07:58:33,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:33,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485472875] [2024-11-16 07:58:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:33,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:33,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 07:58:33,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:33,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485472875] [2024-11-16 07:58:33,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485472875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:58:33,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:58:33,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 07:58:33,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705942205] [2024-11-16 07:58:33,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:58:33,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 07:58:33,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:33,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 07:58:33,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 07:58:33,891 INFO L87 Difference]: Start difference. First operand has 31 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 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 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 07:58:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:33,958 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-11-16 07:58:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 07:58:33,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-16 07:58:33,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:33,966 INFO L225 Difference]: With dead ends: 44 [2024-11-16 07:58:33,966 INFO L226 Difference]: Without dead ends: 30 [2024-11-16 07:58:33,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:58:33,974 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 11 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:33,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 100 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 07:58:33,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-16 07:58:33,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-16 07:58:34,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-16 07:58:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-11-16 07:58:34,002 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 11 [2024-11-16 07:58:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:34,002 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-11-16 07:58:34,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 07:58:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-16 07:58:34,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-16 07:58:34,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:34,004 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:58:34,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 07:58:34,004 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:34,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:34,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1119543594, now seen corresponding path program 1 times [2024-11-16 07:58:34,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:34,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029769128] [2024-11-16 07:58:34,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:34,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:34,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 07:58:34,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029769128] [2024-11-16 07:58:34,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029769128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:58:34,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:58:34,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 07:58:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347711521] [2024-11-16 07:58:34,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:58:34,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 07:58:34,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 07:58:34,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 07:58:34,092 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 07:58:34,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:34,140 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-11-16 07:58:34,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 07:58:34,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-16 07:58:34,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:34,142 INFO L225 Difference]: With dead ends: 35 [2024-11-16 07:58:34,143 INFO L226 Difference]: Without dead ends: 30 [2024-11-16 07:58:34,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:58:34,144 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:34,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 83 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 07:58:34,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-16 07:58:34,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-16 07:58:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-16 07:58:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-11-16 07:58:34,152 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 12 [2024-11-16 07:58:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:34,152 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-11-16 07:58:34,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 07:58:34,152 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-16 07:58:34,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 07:58:34,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:34,153 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:58:34,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 07:58:34,154 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:34,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:34,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2127390698, now seen corresponding path program 1 times [2024-11-16 07:58:34,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:34,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260179738] [2024-11-16 07:58:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:34,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:34,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:34,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:34,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 07:58:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 07:58:34,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:34,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260179738] [2024-11-16 07:58:34,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260179738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:58:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251902340] [2024-11-16 07:58:34,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:34,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:58:34,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:58:34,347 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 07:58:34,349 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 07:58:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:34,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 07:58:34,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:58:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 07:58:34,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:58:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 07:58:34,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251902340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:58:34,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:58:34,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-11-16 07:58:34,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390543689] [2024-11-16 07:58:34,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:58:34,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 07:58:34,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:34,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 07:58:34,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-16 07:58:34,677 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 13 states, 10 states have (on average 3.3) internal successors, (33), 13 states have internal predecessors, (33), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 07:58:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:34,798 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2024-11-16 07:58:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 07:58:34,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.3) internal successors, (33), 13 states have internal predecessors, (33), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 24 [2024-11-16 07:58:34,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:34,800 INFO L225 Difference]: With dead ends: 57 [2024-11-16 07:58:34,800 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 07:58:34,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-16 07:58:34,801 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:34,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 154 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:58:34,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 07:58:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-16 07:58:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-16 07:58:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-16 07:58:34,806 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 24 [2024-11-16 07:58:34,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:34,806 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-16 07:58:34,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.3) internal successors, (33), 13 states have internal predecessors, (33), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 07:58:34,807 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-16 07:58:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-16 07:58:34,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:34,808 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:58:34,821 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 07:58:35,008 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 07:58:35,009 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:35,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:35,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2059978289, now seen corresponding path program 1 times [2024-11-16 07:58:35,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:35,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824476262] [2024-11-16 07:58:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:35,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:35,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:35,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:35,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 07:58:35,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:35,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824476262] [2024-11-16 07:58:35,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824476262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:58:35,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027007524] [2024-11-16 07:58:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:35,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:58:35,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:58:35,151 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 07:58:35,152 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 07:58:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:35,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 07:58:35,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:58:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 07:58:35,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:58:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 07:58:35,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027007524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:58:35,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:58:35,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-16 07:58:35,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964853091] [2024-11-16 07:58:35,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:58:35,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 07:58:35,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:35,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 07:58:35,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-16 07:58:35,364 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 13 states, 11 states have (on average 3.0) internal successors, (33), 13 states have internal predecessors, (33), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 07:58:35,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:35,494 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2024-11-16 07:58:35,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 07:58:35,495 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.0) internal successors, (33), 13 states have internal predecessors, (33), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) Word has length 25 [2024-11-16 07:58:35,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:35,497 INFO L225 Difference]: With dead ends: 55 [2024-11-16 07:58:35,497 INFO L226 Difference]: Without dead ends: 50 [2024-11-16 07:58:35,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-16 07:58:35,498 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:35,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 116 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:58:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-16 07:58:35,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-16 07:58:35,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.25) internal successors, (40), 34 states have internal predecessors, (40), 9 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-16 07:58:35,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 66 transitions. [2024-11-16 07:58:35,514 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 66 transitions. Word has length 25 [2024-11-16 07:58:35,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:35,515 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 66 transitions. [2024-11-16 07:58:35,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.0) internal successors, (33), 13 states have internal predecessors, (33), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 07:58:35,515 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 66 transitions. [2024-11-16 07:58:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 07:58:35,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:35,516 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-16 07:58:35,531 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 07:58:35,716 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 07:58:35,717 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:35,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:35,718 INFO L85 PathProgramCache]: Analyzing trace with hash -747014037, now seen corresponding path program 1 times [2024-11-16 07:58:35,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:35,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964773337] [2024-11-16 07:58:35,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:35,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:35,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:35,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:35,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:35,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 07:58:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:35,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 07:58:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 07:58:35,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:35,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964773337] [2024-11-16 07:58:35,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964773337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:58:35,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423721191] [2024-11-16 07:58:35,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:35,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:58:35,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:58:35,835 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 07:58:35,837 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 07:58:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:35,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 07:58:35,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:58:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 07:58:35,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:58:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 07:58:36,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423721191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:58:36,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:58:36,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-11-16 07:58:36,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68045014] [2024-11-16 07:58:36,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:58:36,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 07:58:36,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:36,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 07:58:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-16 07:58:36,193 INFO L87 Difference]: Start difference. First operand 48 states and 66 transitions. Second operand has 15 states, 12 states have (on average 4.0) internal successors, (48), 15 states have internal predecessors, (48), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-16 07:58:36,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:36,352 INFO L93 Difference]: Finished difference Result 111 states and 179 transitions. [2024-11-16 07:58:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 07:58:36,353 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.0) internal successors, (48), 15 states have internal predecessors, (48), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2024-11-16 07:58:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:36,354 INFO L225 Difference]: With dead ends: 111 [2024-11-16 07:58:36,356 INFO L226 Difference]: Without dead ends: 66 [2024-11-16 07:58:36,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-11-16 07:58:36,357 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 45 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:36,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 157 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:58:36,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-16 07:58:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2024-11-16 07:58:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 45 states have internal predecessors, (52), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (29), 13 states have call predecessors, (29), 12 states have call successors, (29) [2024-11-16 07:58:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 93 transitions. [2024-11-16 07:58:36,369 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 93 transitions. Word has length 37 [2024-11-16 07:58:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:36,370 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 93 transitions. [2024-11-16 07:58:36,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.0) internal successors, (48), 15 states have internal predecessors, (48), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-16 07:58:36,371 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 93 transitions. [2024-11-16 07:58:36,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 07:58:36,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:36,372 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-16 07:58:36,385 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 07:58:36,572 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 07:58:36,573 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:36,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:36,573 INFO L85 PathProgramCache]: Analyzing trace with hash 335870733, now seen corresponding path program 1 times [2024-11-16 07:58:36,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:36,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439737149] [2024-11-16 07:58:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:36,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:36,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:36,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:36,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:36,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:36,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-16 07:58:36,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:36,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439737149] [2024-11-16 07:58:36,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439737149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:58:36,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030684940] [2024-11-16 07:58:36,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:36,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:58:36,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:58:36,690 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 07:58:36,692 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 07:58:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:36,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 07:58:36,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:58:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 07:58:36,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:58:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 07:58:37,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030684940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:58:37,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:58:37,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2024-11-16 07:58:37,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256392860] [2024-11-16 07:58:37,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:58:37,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 07:58:37,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:37,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 07:58:37,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-16 07:58:37,073 INFO L87 Difference]: Start difference. First operand 64 states and 93 transitions. Second operand has 18 states, 16 states have (on average 3.1875) internal successors, (51), 18 states have internal predecessors, (51), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-16 07:58:37,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:37,328 INFO L93 Difference]: Finished difference Result 181 states and 327 transitions. [2024-11-16 07:58:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 07:58:37,329 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.1875) internal successors, (51), 18 states have internal predecessors, (51), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 38 [2024-11-16 07:58:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:37,331 INFO L225 Difference]: With dead ends: 181 [2024-11-16 07:58:37,335 INFO L226 Difference]: Without dead ends: 120 [2024-11-16 07:58:37,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-11-16 07:58:37,337 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 30 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:37,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 274 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 07:58:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-16 07:58:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2024-11-16 07:58:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 68 states have internal predecessors, (79), 21 states have call successors, (21), 7 states have call predecessors, (21), 14 states have return successors, (63), 25 states have call predecessors, (63), 21 states have call successors, (63) [2024-11-16 07:58:37,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 163 transitions. [2024-11-16 07:58:37,354 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 163 transitions. Word has length 38 [2024-11-16 07:58:37,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:37,355 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 163 transitions. [2024-11-16 07:58:37,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.1875) internal successors, (51), 18 states have internal predecessors, (51), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-16 07:58:37,355 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 163 transitions. [2024-11-16 07:58:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 07:58:37,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:37,357 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2024-11-16 07:58:37,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 07:58:37,561 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 07:58:37,562 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:37,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:37,562 INFO L85 PathProgramCache]: Analyzing trace with hash -37020151, now seen corresponding path program 1 times [2024-11-16 07:58:37,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:37,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286862218] [2024-11-16 07:58:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:37,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:37,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:37,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:37,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:37,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:37,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:37,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:37,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 07:58:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-16 07:58:37,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:37,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286862218] [2024-11-16 07:58:37,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286862218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:58:37,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575794683] [2024-11-16 07:58:37,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:37,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:58:37,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:58:37,690 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 07:58:37,692 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 07:58:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:37,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 07:58:37,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:58:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 07:58:37,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:58:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 07:58:38,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575794683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:58:38,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:58:38,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 19 [2024-11-16 07:58:38,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125489939] [2024-11-16 07:58:38,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:58:38,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 07:58:38,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 07:58:38,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-16 07:58:38,255 INFO L87 Difference]: Start difference. First operand 101 states and 163 transitions. Second operand has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 7 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-16 07:58:38,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:38,519 INFO L93 Difference]: Finished difference Result 251 states and 488 transitions. [2024-11-16 07:58:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 07:58:38,519 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 7 states have call predecessors, (17), 13 states have call successors, (17) Word has length 52 [2024-11-16 07:58:38,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:38,521 INFO L225 Difference]: With dead ends: 251 [2024-11-16 07:58:38,521 INFO L226 Difference]: Without dead ends: 153 [2024-11-16 07:58:38,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 111 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2024-11-16 07:58:38,523 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 42 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:38,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 252 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 07:58:38,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-16 07:58:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 110. [2024-11-16 07:58:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 72 states have (on average 1.2222222222222223) internal successors, (88), 73 states have internal predecessors, (88), 24 states have call successors, (24), 9 states have call predecessors, (24), 13 states have return successors, (66), 27 states have call predecessors, (66), 24 states have call successors, (66) [2024-11-16 07:58:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 178 transitions. [2024-11-16 07:58:38,546 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 178 transitions. Word has length 52 [2024-11-16 07:58:38,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:38,546 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 178 transitions. [2024-11-16 07:58:38,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 7 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-16 07:58:38,546 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 178 transitions. [2024-11-16 07:58:38,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 07:58:38,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:38,548 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:58:38,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 07:58:38,749 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 07:58:38,749 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:38,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:38,750 INFO L85 PathProgramCache]: Analyzing trace with hash -717502930, now seen corresponding path program 1 times [2024-11-16 07:58:38,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:38,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666355251] [2024-11-16 07:58:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:38,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:38,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:38,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:38,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:38,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:38,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:38,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:38,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:38,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-16 07:58:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:38,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-16 07:58:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:38,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:38,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-16 07:58:38,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:38,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666355251] [2024-11-16 07:58:38,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666355251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:58:38,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244152016] [2024-11-16 07:58:38,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:38,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:58:38,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:58:38,980 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 07:58:38,982 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 07:58:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:39,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 07:58:39,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:58:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 31 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-16 07:58:39,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:58:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 33 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-16 07:58:39,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244152016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:58:39,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:58:39,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 19 [2024-11-16 07:58:39,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919132201] [2024-11-16 07:58:39,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:58:39,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 07:58:39,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:39,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 07:58:39,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-16 07:58:39,356 INFO L87 Difference]: Start difference. First operand 110 states and 178 transitions. Second operand has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 12 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 11 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-16 07:58:39,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:39,667 INFO L93 Difference]: Finished difference Result 253 states and 495 transitions. [2024-11-16 07:58:39,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 07:58:39,668 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 12 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 11 states have call predecessors, (21), 12 states have call successors, (21) Word has length 80 [2024-11-16 07:58:39,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:39,669 INFO L225 Difference]: With dead ends: 253 [2024-11-16 07:58:39,670 INFO L226 Difference]: Without dead ends: 135 [2024-11-16 07:58:39,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 171 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-11-16 07:58:39,672 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 43 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:39,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 333 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 07:58:39,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-16 07:58:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 112. [2024-11-16 07:58:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 76 states have internal predecessors, (92), 23 states have call successors, (23), 11 states have call predecessors, (23), 13 states have return successors, (60), 24 states have call predecessors, (60), 23 states have call successors, (60) [2024-11-16 07:58:39,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 175 transitions. [2024-11-16 07:58:39,695 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 175 transitions. Word has length 80 [2024-11-16 07:58:39,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:39,695 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 175 transitions. [2024-11-16 07:58:39,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 12 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 11 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-16 07:58:39,695 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 175 transitions. [2024-11-16 07:58:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-16 07:58:39,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:39,696 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:58:39,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 07:58:39,902 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 07:58:39,903 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:39,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:39,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1404727130, now seen corresponding path program 1 times [2024-11-16 07:58:39,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:39,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772764215] [2024-11-16 07:58:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:39,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:39,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-16 07:58:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 07:58:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-16 07:58:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 92 proven. 147 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-16 07:58:40,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:40,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772764215] [2024-11-16 07:58:40,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772764215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:58:40,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284171349] [2024-11-16 07:58:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:40,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:58:40,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:58:40,330 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 07:58:40,331 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 07:58:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:40,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 07:58:40,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:58:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 131 proven. 51 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-11-16 07:58:40,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:58:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 131 proven. 59 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-16 07:58:41,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284171349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:58:41,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:58:41,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10, 13] total 29 [2024-11-16 07:58:41,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135778556] [2024-11-16 07:58:41,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:58:41,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 07:58:41,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 07:58:41,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2024-11-16 07:58:41,197 INFO L87 Difference]: Start difference. First operand 112 states and 175 transitions. Second operand has 29 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 29 states have internal predecessors, (83), 20 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 18 states have call predecessors, (33), 20 states have call successors, (33) [2024-11-16 07:58:41,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:41,586 INFO L93 Difference]: Finished difference Result 253 states and 451 transitions. [2024-11-16 07:58:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 07:58:41,587 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 29 states have internal predecessors, (83), 20 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 18 states have call predecessors, (33), 20 states have call successors, (33) Word has length 134 [2024-11-16 07:58:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:41,589 INFO L225 Difference]: With dead ends: 253 [2024-11-16 07:58:41,589 INFO L226 Difference]: Without dead ends: 131 [2024-11-16 07:58:41,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 290 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=294, Invalid=1512, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 07:58:41,591 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 72 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:41,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 369 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 07:58:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-16 07:58:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 108. [2024-11-16 07:58:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 73 states have internal predecessors, (85), 20 states have call successors, (20), 11 states have call predecessors, (20), 14 states have return successors, (52), 23 states have call predecessors, (52), 20 states have call successors, (52) [2024-11-16 07:58:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 157 transitions. [2024-11-16 07:58:41,608 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 157 transitions. Word has length 134 [2024-11-16 07:58:41,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:41,609 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 157 transitions. [2024-11-16 07:58:41,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 29 states have internal predecessors, (83), 20 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 18 states have call predecessors, (33), 20 states have call successors, (33) [2024-11-16 07:58:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 157 transitions. [2024-11-16 07:58:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-16 07:58:41,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:41,611 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:58:41,624 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 07:58:41,811 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 07:58:41,811 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:41,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:41,812 INFO L85 PathProgramCache]: Analyzing trace with hash -193814043, now seen corresponding path program 2 times [2024-11-16 07:58:41,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:41,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142262035] [2024-11-16 07:58:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:41,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:41,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:41,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:41,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:41,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:41,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:41,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:41,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:41,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-16 07:58:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:41,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:41,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:41,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 07:58:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:42,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:42,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 79 proven. 22 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-16 07:58:42,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:42,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142262035] [2024-11-16 07:58:42,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142262035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:58:42,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721864387] [2024-11-16 07:58:42,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 07:58:42,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:58:42,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:58:42,038 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 07:58:42,039 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 07:58:42,098 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 07:58:42,099 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:58:42,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 07:58:42,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:58:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-16 07:58:42,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:58:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-16 07:58:42,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721864387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:58:42,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:58:42,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 9] total 19 [2024-11-16 07:58:42,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848736891] [2024-11-16 07:58:42,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:58:42,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 07:58:42,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:42,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 07:58:42,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-16 07:58:42,403 INFO L87 Difference]: Start difference. First operand 108 states and 157 transitions. Second operand has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 11 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 12 states have call predecessors, (21), 11 states have call successors, (21) [2024-11-16 07:58:42,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:42,598 INFO L93 Difference]: Finished difference Result 223 states and 338 transitions. [2024-11-16 07:58:42,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 07:58:42,598 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 11 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 12 states have call predecessors, (21), 11 states have call successors, (21) Word has length 93 [2024-11-16 07:58:42,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:42,599 INFO L225 Difference]: With dead ends: 223 [2024-11-16 07:58:42,599 INFO L226 Difference]: Without dead ends: 125 [2024-11-16 07:58:42,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 201 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-11-16 07:58:42,601 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:42,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 275 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:58:42,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-16 07:58:42,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2024-11-16 07:58:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 80 states have internal predecessors, (93), 21 states have call successors, (21), 12 states have call predecessors, (21), 16 states have return successors, (53), 26 states have call predecessors, (53), 21 states have call successors, (53) [2024-11-16 07:58:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 167 transitions. [2024-11-16 07:58:42,614 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 167 transitions. Word has length 93 [2024-11-16 07:58:42,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:42,614 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 167 transitions. [2024-11-16 07:58:42,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 11 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 12 states have call predecessors, (21), 11 states have call successors, (21) [2024-11-16 07:58:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 167 transitions. [2024-11-16 07:58:42,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-16 07:58:42,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:42,616 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:58:42,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 07:58:42,817 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 07:58:42,817 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:42,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:42,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1548209939, now seen corresponding path program 3 times [2024-11-16 07:58:42,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:42,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980710729] [2024-11-16 07:58:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:42,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:42,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:42,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:42,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:42,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-16 07:58:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 07:58:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 108 proven. 97 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-16 07:58:43,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:43,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980710729] [2024-11-16 07:58:43,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980710729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:58:43,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138971776] [2024-11-16 07:58:43,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 07:58:43,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:58:43,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:58:43,146 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 07:58:43,147 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 07:58:43,220 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 07:58:43,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:58:43,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 07:58:43,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:58:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 141 proven. 21 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-16 07:58:43,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:58:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 141 proven. 21 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-16 07:58:43,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138971776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:58:43,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:58:43,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 29 [2024-11-16 07:58:43,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293505654] [2024-11-16 07:58:43,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:58:43,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 07:58:43,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:43,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 07:58:43,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2024-11-16 07:58:43,684 INFO L87 Difference]: Start difference. First operand 119 states and 167 transitions. Second operand has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 17 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 14 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-16 07:58:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:44,039 INFO L93 Difference]: Finished difference Result 261 states and 436 transitions. [2024-11-16 07:58:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 07:58:44,039 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 17 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 14 states have call predecessors, (27), 17 states have call successors, (27) Word has length 120 [2024-11-16 07:58:44,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:44,041 INFO L225 Difference]: With dead ends: 261 [2024-11-16 07:58:44,041 INFO L226 Difference]: Without dead ends: 152 [2024-11-16 07:58:44,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 260 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=319, Invalid=1573, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 07:58:44,042 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 89 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:44,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 283 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 07:58:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-16 07:58:44,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 129. [2024-11-16 07:58:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 87 states have internal predecessors, (105), 22 states have call successors, (22), 17 states have call predecessors, (22), 15 states have return successors, (54), 24 states have call predecessors, (54), 22 states have call successors, (54) [2024-11-16 07:58:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 181 transitions. [2024-11-16 07:58:44,050 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 181 transitions. Word has length 120 [2024-11-16 07:58:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:44,051 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 181 transitions. [2024-11-16 07:58:44,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 17 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 14 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-16 07:58:44,051 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 181 transitions. [2024-11-16 07:58:44,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-16 07:58:44,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:44,052 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:58:44,064 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 07:58:44,255 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 07:58:44,256 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:44,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:44,256 INFO L85 PathProgramCache]: Analyzing trace with hash 42443120, now seen corresponding path program 4 times [2024-11-16 07:58:44,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:44,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660178370] [2024-11-16 07:58:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:44,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-16 07:58:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 07:58:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-16 07:58:44,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:44,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660178370] [2024-11-16 07:58:44,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660178370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:58:44,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235482669] [2024-11-16 07:58:44,819 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 07:58:44,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:58:44,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:58:44,821 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 07:58:44,822 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 07:58:44,884 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 07:58:44,884 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:58:44,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-16 07:58:44,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:58:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-16 07:58:45,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:58:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-16 07:58:45,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235482669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:58:45,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:58:45,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2024-11-16 07:58:45,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456676524] [2024-11-16 07:58:45,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:58:45,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-16 07:58:45,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:45,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-16 07:58:45,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-11-16 07:58:45,332 INFO L87 Difference]: Start difference. First operand 129 states and 181 transitions. Second operand has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 15 states have internal predecessors, (40), 5 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-16 07:58:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:45,480 INFO L93 Difference]: Finished difference Result 137 states and 191 transitions. [2024-11-16 07:58:45,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 07:58:45,481 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 15 states have internal predecessors, (40), 5 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) Word has length 107 [2024-11-16 07:58:45,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:45,482 INFO L225 Difference]: With dead ends: 137 [2024-11-16 07:58:45,482 INFO L226 Difference]: Without dead ends: 132 [2024-11-16 07:58:45,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-11-16 07:58:45,483 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:45,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1070 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:58:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-16 07:58:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2024-11-16 07:58:45,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 87 states have internal predecessors, (105), 22 states have call successors, (22), 17 states have call predecessors, (22), 15 states have return successors, (53), 24 states have call predecessors, (53), 22 states have call successors, (53) [2024-11-16 07:58:45,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 180 transitions. [2024-11-16 07:58:45,491 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 180 transitions. Word has length 107 [2024-11-16 07:58:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:45,491 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 180 transitions. [2024-11-16 07:58:45,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 15 states have internal predecessors, (40), 5 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-16 07:58:45,491 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 180 transitions. [2024-11-16 07:58:45,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-16 07:58:45,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:58:45,493 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:58:45,509 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 07:58:45,696 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 07:58:45,697 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:58:45,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:58:45,697 INFO L85 PathProgramCache]: Analyzing trace with hash 756639874, now seen corresponding path program 5 times [2024-11-16 07:58:45,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:58:45,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682121735] [2024-11-16 07:58:45,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:58:45,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:58:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:58:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-16 07:58:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 07:58:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:45,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 07:58:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:46,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:46,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:58:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:46,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 07:58:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:46,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:58:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:58:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 165 proven. 92 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-16 07:58:46,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:58:46,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682121735] [2024-11-16 07:58:46,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682121735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:58:46,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578952032] [2024-11-16 07:58:46,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 07:58:46,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:58:46,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:58:46,076 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 07:58:46,077 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 07:58:46,148 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-16 07:58:46,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:58:46,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 07:58:46,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:58:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 150 proven. 142 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-16 07:58:46,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:58:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 152 proven. 146 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-16 07:58:47,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578952032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:58:47,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:58:47,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 17] total 30 [2024-11-16 07:58:47,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438406775] [2024-11-16 07:58:47,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:58:47,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 07:58:47,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:58:47,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 07:58:47,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2024-11-16 07:58:47,068 INFO L87 Difference]: Start difference. First operand 129 states and 180 transitions. Second operand has 30 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 30 states have internal predecessors, (95), 22 states have call successors, (30), 1 states have call predecessors, (30), 10 states have return successors, (34), 16 states have call predecessors, (34), 22 states have call successors, (34) [2024-11-16 07:58:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:58:47,355 INFO L93 Difference]: Finished difference Result 236 states and 350 transitions. [2024-11-16 07:58:47,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 07:58:47,358 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 30 states have internal predecessors, (95), 22 states have call successors, (30), 1 states have call predecessors, (30), 10 states have return successors, (34), 16 states have call predecessors, (34), 22 states have call successors, (34) Word has length 148 [2024-11-16 07:58:47,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:58:47,359 INFO L225 Difference]: With dead ends: 236 [2024-11-16 07:58:47,359 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 07:58:47,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 316 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 07:58:47,360 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 45 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 07:58:47,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 323 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 07:58:47,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 07:58:47,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 07:58:47,361 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 07:58:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 07:58:47,362 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 148 [2024-11-16 07:58:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:58:47,362 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 07:58:47,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 30 states have internal predecessors, (95), 22 states have call successors, (30), 1 states have call predecessors, (30), 10 states have return successors, (34), 16 states have call predecessors, (34), 22 states have call successors, (34) [2024-11-16 07:58:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 07:58:47,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 07:58:47,365 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 07:58:47,377 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 07:58:47,565 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 07:58:47,568 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:58:47,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 07:58:49,044 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 07:58:49,069 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-16 07:58:49,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:58:49 BoogieIcfgContainer [2024-11-16 07:58:49,070 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 07:58:49,070 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 07:58:49,070 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 07:58:49,070 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 07:58:49,071 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:58:33" (3/4) ... [2024-11-16 07:58:49,072 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 07:58:49,075 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-11-16 07:58:49,075 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-11-16 07:58:49,078 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-16 07:58:49,078 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-16 07:58:49,078 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 07:58:49,078 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 07:58:49,141 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 07:58:49,141 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 07:58:49,142 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 07:58:49,142 INFO L158 Benchmark]: Toolchain (without parser) took 16030.13ms. Allocated memory was 205.5MB in the beginning and 432.0MB in the end (delta: 226.5MB). Free memory was 135.2MB in the beginning and 381.2MB in the end (delta: -246.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 07:58:49,142 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 125.8MB. Free memory was 87.3MB in the beginning and 87.0MB in the end (delta: 272.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 07:58:49,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.09ms. Allocated memory is still 205.5MB. Free memory was 135.2MB in the beginning and 123.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 07:58:49,143 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.47ms. Allocated memory is still 205.5MB. Free memory was 123.0MB in the beginning and 121.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 07:58:49,143 INFO L158 Benchmark]: Boogie Preprocessor took 22.62ms. Allocated memory is still 205.5MB. Free memory was 121.7MB in the beginning and 119.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 07:58:49,143 INFO L158 Benchmark]: IcfgBuilder took 203.58ms. Allocated memory is still 205.5MB. Free memory was 119.9MB in the beginning and 107.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 07:58:49,143 INFO L158 Benchmark]: TraceAbstraction took 15492.67ms. Allocated memory was 205.5MB in the beginning and 432.0MB in the end (delta: 226.5MB). Free memory was 107.4MB in the beginning and 386.4MB in the end (delta: -279.1MB). Peak memory consumption was 194.6MB. Max. memory is 16.1GB. [2024-11-16 07:58:49,143 INFO L158 Benchmark]: Witness Printer took 71.47ms. Allocated memory is still 432.0MB. Free memory was 386.4MB in the beginning and 381.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-16 07:58:49,144 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 125.8MB. Free memory was 87.3MB in the beginning and 87.0MB in the end (delta: 272.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.09ms. Allocated memory is still 205.5MB. Free memory was 135.2MB in the beginning and 123.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.47ms. Allocated memory is still 205.5MB. Free memory was 123.0MB in the beginning and 121.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.62ms. Allocated memory is still 205.5MB. Free memory was 121.7MB in the beginning and 119.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 203.58ms. Allocated memory is still 205.5MB. Free memory was 119.9MB in the beginning and 107.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15492.67ms. Allocated memory was 205.5MB in the beginning and 432.0MB in the end (delta: 226.5MB). Free memory was 107.4MB in the beginning and 386.4MB in the end (delta: -279.1MB). Peak memory consumption was 194.6MB. Max. memory is 16.1GB. * Witness Printer took 71.47ms. Allocated memory is still 432.0MB. Free memory was 386.4MB in the beginning and 381.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 41]: 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.9s, OverallIterations: 13, TraceHistogramMax: 11, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 551 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 480 mSDsluCounter, 3789 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3388 mSDsCounter, 455 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4024 IncrementalHoareTripleChecker+Invalid, 4479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 455 mSolverCounterUnsat, 401 mSDtfsCounter, 4024 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2184 GetRequests, 1854 SyntacticMatches, 42 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2122 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=11, InterpolantAutomatonStates: 220, 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, 13 MinimizatonAttempts, 150 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 1739 NumberOfCodeBlocks, 1666 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 2562 ConstructedInterpolants, 0 QuantifiedInterpolants, 5100 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1920 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 35 InterpolantComputations, 2 PerfectInterpolantSequences, 4703/6024 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 - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2. Ensures: ((((((((2 == \result) && (3 == n)) || ((\result == 1) && (n == 1))) || ((3 == \result) && (n == 4))) || (4 < n)) || (n < 1)) || ((\result == 1) && (2 == n))) && (((\result == 0) || (n == 1)) || (1 < n))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Ensures: (((\result == 0) || (1 < n)) || (n == 1)) RESULT: Ultimate proved your program to be correct! [2024-11-16 07:58:49,167 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