./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/nla-digbench-scaling/egcd3-ll_unwindbound10.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 76fd23ddcb7e8fff12decb053b84ed59e907e32bdbc4e822256bdb820e1311ef --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:35:28,306 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:35:28,384 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:35:28,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:35:28,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:35:28,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:35:28,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:35:28,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:35:28,424 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:35:28,427 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:35:28,428 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:35:28,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:35:28,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:35:28,429 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:35:28,429 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:35:28,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:35:28,430 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:35:28,432 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:35:28,433 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:35:28,433 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:35:28,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:35:28,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:35:28,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:35:28,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:35:28,434 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:35:28,435 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:35:28,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:35:28,435 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:35:28,436 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:35:28,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:35:28,436 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:35:28,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:35:28,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:35:28,437 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:35:28,437 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:35:28,437 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:35:28,438 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:35:28,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:35:28,438 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:35:28,438 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:35:28,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:35:28,440 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:35:28,440 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76fd23ddcb7e8fff12decb053b84ed59e907e32bdbc4e822256bdb820e1311ef [2024-11-09 22:35:28,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:35:28,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:35:28,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:35:28,726 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:35:28,726 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:35:28,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c [2024-11-09 22:35:30,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:35:30,308 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:35:30,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c [2024-11-09 22:35:30,319 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114b46b8c/3d74136cdfbc48c8bb43616d631186f7/FLAG28417dbea [2024-11-09 22:35:30,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114b46b8c/3d74136cdfbc48c8bb43616d631186f7 [2024-11-09 22:35:30,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:35:30,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:35:30,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:35:30,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:35:30,347 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:35:30,348 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a4392d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30, skipping insertion in model container [2024-11-09 22:35:30,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,371 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:35:30,556 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c[490,503] [2024-11-09 22:35:30,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:35:30,586 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:35:30,599 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c[490,503] [2024-11-09 22:35:30,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:35:30,630 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:35:30,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30 WrapperNode [2024-11-09 22:35:30,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:35:30,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:35:30,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:35:30,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:35:30,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,664 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 91 [2024-11-09 22:35:30,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:35:30,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:35:30,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:35:30,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:35:30,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,677 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,687 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]. [2024-11-09 22:35:30,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,690 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,694 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:35:30,695 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:35:30,695 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:35:30,695 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:35:30,696 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (1/1) ... [2024-11-09 22:35:30,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:35:30,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:30,728 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) [2024-11-09 22:35:30,734 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 [2024-11-09 22:35:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:35:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 22:35:30,781 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 22:35:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:35:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:35:30,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:35:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 22:35:30,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 22:35:30,856 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:35:30,858 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:35:31,055 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-09 22:35:31,055 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:35:31,070 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:35:31,071 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:35:31,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:35:31 BoogieIcfgContainer [2024-11-09 22:35:31,071 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:35:31,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:35:31,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:35:31,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:35:31,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:35:30" (1/3) ... [2024-11-09 22:35:31,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ec3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:35:31, skipping insertion in model container [2024-11-09 22:35:31,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:30" (2/3) ... [2024-11-09 22:35:31,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ec3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:35:31, skipping insertion in model container [2024-11-09 22:35:31,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:35:31" (3/3) ... [2024-11-09 22:35:31,081 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound10.c [2024-11-09 22:35:31,098 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:35:31,099 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:35:31,150 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:35:31,156 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;@7570aeff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:35:31,156 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:35:31,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 22:35:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:35:31,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:31,166 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:31,166 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:31,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash 254642677, now seen corresponding path program 1 times [2024-11-09 22:35:31,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:31,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237927011] [2024-11-09 22:35:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:31,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:31,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:31,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:35:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:31,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:31,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237927011] [2024-11-09 22:35:31,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237927011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:31,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:31,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:35:31,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430893216] [2024-11-09 22:35:31,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:31,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:35:31,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:35:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:35:31,355 INFO L87 Difference]: Start difference. First operand has 36 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:35:31,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:31,372 INFO L93 Difference]: Finished difference Result 69 states and 105 transitions. [2024-11-09 22:35:31,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:35:31,374 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-09 22:35:31,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:31,380 INFO L225 Difference]: With dead ends: 69 [2024-11-09 22:35:31,380 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 22:35:31,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:35:31,386 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:31,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:31,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 22:35:31,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 22:35:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:35:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-11-09 22:35:31,423 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 19 [2024-11-09 22:35:31,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:31,424 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-11-09 22:35:31,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:35:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-11-09 22:35:31,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 22:35:31,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:31,426 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:31,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:35:31,426 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:31,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:31,427 INFO L85 PathProgramCache]: Analyzing trace with hash -195338036, now seen corresponding path program 1 times [2024-11-09 22:35:31,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:31,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512574140] [2024-11-09 22:35:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:31,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:31,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:31,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:35:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:31,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:31,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512574140] [2024-11-09 22:35:31,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512574140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:31,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:31,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 22:35:31,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571971154] [2024-11-09 22:35:31,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:31,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:35:31,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:31,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:35:31,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:35:31,606 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:31,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:31,641 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2024-11-09 22:35:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:35:31,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-09 22:35:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:31,643 INFO L225 Difference]: With dead ends: 42 [2024-11-09 22:35:31,643 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 22:35:31,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:35:31,645 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:31,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 106 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 22:35:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-09 22:35:31,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:35:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2024-11-09 22:35:31,660 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 20 [2024-11-09 22:35:31,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:31,662 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2024-11-09 22:35:31,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:31,662 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2024-11-09 22:35:31,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 22:35:31,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:31,663 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:31,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:35:31,664 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:31,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1558200102, now seen corresponding path program 1 times [2024-11-09 22:35:31,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:31,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345114633] [2024-11-09 22:35:31,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:31,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:31,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:31,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:35:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:35:31,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:31,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345114633] [2024-11-09 22:35:31,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345114633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:31,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:31,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 22:35:31,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003173994] [2024-11-09 22:35:31,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:31,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:35:31,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:31,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:35:31,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:35:31,881 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:31,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:31,982 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2024-11-09 22:35:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:35:31,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-09 22:35:31,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:31,984 INFO L225 Difference]: With dead ends: 55 [2024-11-09 22:35:31,984 INFO L226 Difference]: Without dead ends: 47 [2024-11-09 22:35:31,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:35:31,986 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 42 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:31,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 123 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:31,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-09 22:35:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2024-11-09 22:35:31,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:35:31,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2024-11-09 22:35:31,995 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 21 [2024-11-09 22:35:31,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:31,995 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2024-11-09 22:35:31,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:31,995 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2024-11-09 22:35:31,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 22:35:31,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:31,996 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:31,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 22:35:31,997 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:31,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:31,997 INFO L85 PathProgramCache]: Analyzing trace with hash -479286204, now seen corresponding path program 1 times [2024-11-09 22:35:31,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:31,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139579201] [2024-11-09 22:35:31,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:31,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:32,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:32,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:35:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:32,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:32,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139579201] [2024-11-09 22:35:32,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139579201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:32,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:32,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:35:32,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776260748] [2024-11-09 22:35:32,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:32,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:32,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:32,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:32,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:35:32,110 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:32,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:32,148 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2024-11-09 22:35:32,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:35:32,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-09 22:35:32,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:32,151 INFO L225 Difference]: With dead ends: 60 [2024-11-09 22:35:32,151 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 22:35:32,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:35:32,153 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:32,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 106 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 22:35:32,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 22:35:32,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:35:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2024-11-09 22:35:32,162 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 26 [2024-11-09 22:35:32,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:32,163 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2024-11-09 22:35:32,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:32,163 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2024-11-09 22:35:32,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 22:35:32,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:32,165 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, 1, 1] [2024-11-09 22:35:32,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 22:35:32,165 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:32,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:32,166 INFO L85 PathProgramCache]: Analyzing trace with hash -165974853, now seen corresponding path program 1 times [2024-11-09 22:35:32,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:32,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923262602] [2024-11-09 22:35:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:32,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:32,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112783582] [2024-11-09 22:35:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:32,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:32,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:32,197 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) [2024-11-09 22:35:32,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:35:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:32,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:35:32,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:32,462 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:35:32,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:32,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923262602] [2024-11-09 22:35:32,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:32,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112783582] [2024-11-09 22:35:32,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112783582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:32,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:32,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:35:32,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022646215] [2024-11-09 22:35:32,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:32,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:32,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:32,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:35:32,467 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:32,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:32,526 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2024-11-09 22:35:32,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:35:32,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-09 22:35:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:32,528 INFO L225 Difference]: With dead ends: 56 [2024-11-09 22:35:32,529 INFO L226 Difference]: Without dead ends: 53 [2024-11-09 22:35:32,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:35:32,531 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:32,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 142 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:32,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-09 22:35:32,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2024-11-09 22:35:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 38 states have internal predecessors, (48), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 22:35:32,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2024-11-09 22:35:32,549 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 26 [2024-11-09 22:35:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:32,549 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2024-11-09 22:35:32,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:32,550 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2024-11-09 22:35:32,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 22:35:32,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:32,551 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:32,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 22:35:32,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:32,753 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:32,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:32,753 INFO L85 PathProgramCache]: Analyzing trace with hash 405123914, now seen corresponding path program 1 times [2024-11-09 22:35:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:32,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307268123] [2024-11-09 22:35:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:32,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:32,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:32,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:35:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:32,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:32,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307268123] [2024-11-09 22:35:32,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307268123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:32,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449229166] [2024-11-09 22:35:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:32,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:32,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:32,950 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) [2024-11-09 22:35:32,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:35:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:33,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:35:33,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:33,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:33,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449229166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:33,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:35:33,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 10 [2024-11-09 22:35:33,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367127767] [2024-11-09 22:35:33,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:33,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 22:35:33,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:33,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 22:35:33,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:35:33,134 INFO L87 Difference]: Start difference. First operand 52 states and 69 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 22:35:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:33,307 INFO L93 Difference]: Finished difference Result 152 states and 198 transitions. [2024-11-09 22:35:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 22:35:33,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2024-11-09 22:35:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:33,310 INFO L225 Difference]: With dead ends: 152 [2024-11-09 22:35:33,310 INFO L226 Difference]: Without dead ends: 144 [2024-11-09 22:35:33,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:35:33,311 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 85 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:33,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 171 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-09 22:35:33,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 98. [2024-11-09 22:35:33,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 72 states have internal predecessors, (93), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-09 22:35:33,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 131 transitions. [2024-11-09 22:35:33,343 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 131 transitions. Word has length 27 [2024-11-09 22:35:33,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:33,343 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 131 transitions. [2024-11-09 22:35:33,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 22:35:33,344 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 131 transitions. [2024-11-09 22:35:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 22:35:33,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:33,345 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:33,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 22:35:33,548 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,SelfDestructingSolverStorable5 [2024-11-09 22:35:33,549 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:33,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash -123748836, now seen corresponding path program 1 times [2024-11-09 22:35:33,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:33,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108624464] [2024-11-09 22:35:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:33,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:33,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:33,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:35:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:35:33,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:33,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108624464] [2024-11-09 22:35:33,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108624464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:33,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037464287] [2024-11-09 22:35:33,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:33,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:33,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:33,686 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) [2024-11-09 22:35:33,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:35:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:33,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:35:33,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:35:33,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:35:33,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037464287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:33,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:35:33,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-11-09 22:35:33,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427535196] [2024-11-09 22:35:33,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:33,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 22:35:33,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:33,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 22:35:33,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 22:35:33,867 INFO L87 Difference]: Start difference. First operand 98 states and 131 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:35:34,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:34,049 INFO L93 Difference]: Finished difference Result 185 states and 263 transitions. [2024-11-09 22:35:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 22:35:34,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-09 22:35:34,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:34,051 INFO L225 Difference]: With dead ends: 185 [2024-11-09 22:35:34,052 INFO L226 Difference]: Without dead ends: 172 [2024-11-09 22:35:34,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:35:34,055 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 112 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:34,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 247 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:34,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-09 22:35:34,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 129. [2024-11-09 22:35:34,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 98 states have (on average 1.346938775510204) internal successors, (132), 99 states have internal predecessors, (132), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-09 22:35:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 177 transitions. [2024-11-09 22:35:34,081 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 177 transitions. Word has length 28 [2024-11-09 22:35:34,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:34,081 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 177 transitions. [2024-11-09 22:35:34,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:35:34,081 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 177 transitions. [2024-11-09 22:35:34,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:35:34,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:34,083 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:34,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 22:35:34,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:34,283 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:34,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:34,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2054204561, now seen corresponding path program 1 times [2024-11-09 22:35:34,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:34,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440799786] [2024-11-09 22:35:34,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:34,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:34,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292791895] [2024-11-09 22:35:34,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:34,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:34,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:34,299 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) [2024-11-09 22:35:34,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:35:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:34,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:35:34,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:34,447 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:35:34,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440799786] [2024-11-09 22:35:34,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292791895] [2024-11-09 22:35:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292791895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:34,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:34,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:35:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128804771] [2024-11-09 22:35:34,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:34,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:34,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:34,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:34,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:35:34,451 INFO L87 Difference]: Start difference. First operand 129 states and 177 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:35:34,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:34,502 INFO L93 Difference]: Finished difference Result 145 states and 192 transitions. [2024-11-09 22:35:34,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:35:34,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-09 22:35:34,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:34,504 INFO L225 Difference]: With dead ends: 145 [2024-11-09 22:35:34,504 INFO L226 Difference]: Without dead ends: 142 [2024-11-09 22:35:34,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:35:34,506 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 9 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:34,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 140 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:34,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-09 22:35:34,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2024-11-09 22:35:34,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 107 states have (on average 1.3177570093457944) internal successors, (141), 108 states have internal predecessors, (141), 23 states have call successors, (23), 10 states have call predecessors, (23), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-09 22:35:34,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 186 transitions. [2024-11-09 22:35:34,537 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 186 transitions. Word has length 31 [2024-11-09 22:35:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:34,537 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 186 transitions. [2024-11-09 22:35:34,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:35:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 186 transitions. [2024-11-09 22:35:34,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 22:35:34,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:34,538 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 22:35:34,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 22:35:34,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:34,739 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:34,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:34,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1655793849, now seen corresponding path program 1 times [2024-11-09 22:35:34,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:34,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222819381] [2024-11-09 22:35:34,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:34,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:34,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621717577] [2024-11-09 22:35:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:34,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:34,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:34,754 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) [2024-11-09 22:35:34,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 22:35:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:34,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 22:35:34,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:34,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:35,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:35,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222819381] [2024-11-09 22:35:35,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:35,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621717577] [2024-11-09 22:35:35,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621717577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:35,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:35:35,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-09 22:35:35,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169497175] [2024-11-09 22:35:35,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:35,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 22:35:35,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 22:35:35,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:35:35,092 INFO L87 Difference]: Start difference. First operand 141 states and 186 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:35,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:35,262 INFO L93 Difference]: Finished difference Result 177 states and 239 transitions. [2024-11-09 22:35:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:35:35,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-11-09 22:35:35,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:35,264 INFO L225 Difference]: With dead ends: 177 [2024-11-09 22:35:35,264 INFO L226 Difference]: Without dead ends: 174 [2024-11-09 22:35:35,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-09 22:35:35,265 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 19 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:35,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 311 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-09 22:35:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2024-11-09 22:35:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 128 states have (on average 1.34375) internal successors, (172), 129 states have internal predecessors, (172), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 22:35:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 233 transitions. [2024-11-09 22:35:35,288 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 233 transitions. Word has length 33 [2024-11-09 22:35:35,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:35,288 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 233 transitions. [2024-11-09 22:35:35,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 233 transitions. [2024-11-09 22:35:35,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 22:35:35,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:35,294 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:35,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 22:35:35,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:35,499 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:35,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:35,499 INFO L85 PathProgramCache]: Analyzing trace with hash -241064783, now seen corresponding path program 1 times [2024-11-09 22:35:35,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:35,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074542442] [2024-11-09 22:35:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:35,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:35,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:35,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:35:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:35,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:35,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074542442] [2024-11-09 22:35:35,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074542442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:35,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:35,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 22:35:35,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723505231] [2024-11-09 22:35:35,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:35,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:35:35,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:35,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:35:35,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:35:35,576 INFO L87 Difference]: Start difference. First operand 171 states and 233 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:35,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:35,610 INFO L93 Difference]: Finished difference Result 239 states and 327 transitions. [2024-11-09 22:35:35,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:35:35,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-11-09 22:35:35,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:35,613 INFO L225 Difference]: With dead ends: 239 [2024-11-09 22:35:35,613 INFO L226 Difference]: Without dead ends: 171 [2024-11-09 22:35:35,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:35:35,614 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:35,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 132 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-09 22:35:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-09 22:35:35,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 128 states have (on average 1.3359375) internal successors, (171), 129 states have internal predecessors, (171), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 22:35:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 232 transitions. [2024-11-09 22:35:35,635 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 232 transitions. Word has length 33 [2024-11-09 22:35:35,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:35,635 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 232 transitions. [2024-11-09 22:35:35,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 232 transitions. [2024-11-09 22:35:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 22:35:35,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:35,636 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:35,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 22:35:35,636 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:35,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:35,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1346215163, now seen corresponding path program 1 times [2024-11-09 22:35:35,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:35,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624028286] [2024-11-09 22:35:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:35,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:35,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263613486] [2024-11-09 22:35:35,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:35,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:35,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:35,650 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) [2024-11-09 22:35:35,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 22:35:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:35,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:35:35,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 22:35:35,757 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:35:35,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:35,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624028286] [2024-11-09 22:35:35,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:35,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263613486] [2024-11-09 22:35:35,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263613486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:35,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:35,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:35:35,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287925011] [2024-11-09 22:35:35,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:35,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:35,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:35,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:35,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:35:35,759 INFO L87 Difference]: Start difference. First operand 171 states and 232 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 22:35:35,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:35,829 INFO L93 Difference]: Finished difference Result 237 states and 333 transitions. [2024-11-09 22:35:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:35:35,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2024-11-09 22:35:35,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:35,832 INFO L225 Difference]: With dead ends: 237 [2024-11-09 22:35:35,832 INFO L226 Difference]: Without dead ends: 234 [2024-11-09 22:35:35,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:35:35,833 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:35,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 132 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:35,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-09 22:35:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 227. [2024-11-09 22:35:35,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 161 states have (on average 1.3664596273291925) internal successors, (220), 162 states have internal predecessors, (220), 51 states have call successors, (51), 14 states have call predecessors, (51), 14 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-09 22:35:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 321 transitions. [2024-11-09 22:35:35,865 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 321 transitions. Word has length 36 [2024-11-09 22:35:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:35,866 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 321 transitions. [2024-11-09 22:35:35,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 22:35:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 321 transitions. [2024-11-09 22:35:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 22:35:35,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:35,868 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:35,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 22:35:36,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:36,073 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:36,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:36,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1343412687, now seen corresponding path program 1 times [2024-11-09 22:35:36,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:36,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796175268] [2024-11-09 22:35:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:36,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:36,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146181806] [2024-11-09 22:35:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:36,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:36,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:36,087 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) [2024-11-09 22:35:36,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 22:35:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:36,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 22:35:36,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:36,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:36,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:36,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796175268] [2024-11-09 22:35:36,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:36,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146181806] [2024-11-09 22:35:36,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146181806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:36,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:35:36,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-09 22:35:36,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304287494] [2024-11-09 22:35:36,365 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:36,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:35:36,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:36,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:35:36,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:35:36,366 INFO L87 Difference]: Start difference. First operand 227 states and 321 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:35:36,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:36,526 INFO L93 Difference]: Finished difference Result 240 states and 332 transitions. [2024-11-09 22:35:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:35:36,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-09 22:35:36,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:36,528 INFO L225 Difference]: With dead ends: 240 [2024-11-09 22:35:36,528 INFO L226 Difference]: Without dead ends: 237 [2024-11-09 22:35:36,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:35:36,529 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 37 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:36,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 244 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:36,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-09 22:35:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2024-11-09 22:35:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 167 states have (on average 1.3532934131736527) internal successors, (226), 168 states have internal predecessors, (226), 51 states have call successors, (51), 16 states have call predecessors, (51), 16 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-09 22:35:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 327 transitions. [2024-11-09 22:35:36,552 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 327 transitions. Word has length 38 [2024-11-09 22:35:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:36,552 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 327 transitions. [2024-11-09 22:35:36,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:35:36,553 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 327 transitions. [2024-11-09 22:35:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 22:35:36,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:36,553 INFO L215 NwaCegarLoop]: trace histogram [4, 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] [2024-11-09 22:35:36,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 22:35:36,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:36,754 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:36,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:36,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2138409647, now seen corresponding path program 1 times [2024-11-09 22:35:36,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:36,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207458158] [2024-11-09 22:35:36,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:36,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:36,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144286335] [2024-11-09 22:35:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:36,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:36,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:36,767 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) [2024-11-09 22:35:36,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 22:35:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:36,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:35:36,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 22:35:36,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:35:36,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207458158] [2024-11-09 22:35:36,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:36,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144286335] [2024-11-09 22:35:36,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144286335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:36,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:36,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:35:36,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090686591] [2024-11-09 22:35:36,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:36,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:36,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:36,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:36,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:35:36,866 INFO L87 Difference]: Start difference. First operand 235 states and 327 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:35:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:36,931 INFO L93 Difference]: Finished difference Result 311 states and 456 transitions. [2024-11-09 22:35:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:35:36,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2024-11-09 22:35:36,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:36,934 INFO L225 Difference]: With dead ends: 311 [2024-11-09 22:35:36,934 INFO L226 Difference]: Without dead ends: 308 [2024-11-09 22:35:36,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:35:36,935 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:36,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 140 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-11-09 22:35:36,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 293. [2024-11-09 22:35:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 188 states have (on average 1.3563829787234043) internal successors, (255), 198 states have internal predecessors, (255), 87 states have call successors, (87), 17 states have call predecessors, (87), 17 states have return successors, (86), 77 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-09 22:35:36,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 428 transitions. [2024-11-09 22:35:36,985 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 428 transitions. Word has length 41 [2024-11-09 22:35:36,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:36,986 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 428 transitions. [2024-11-09 22:35:36,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:35:36,986 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 428 transitions. [2024-11-09 22:35:36,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 22:35:36,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:36,987 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:37,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 22:35:37,188 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,SelfDestructingSolverStorable12 [2024-11-09 22:35:37,188 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:37,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:37,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1491469114, now seen corresponding path program 1 times [2024-11-09 22:35:37,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:37,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993060656] [2024-11-09 22:35:37,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:37,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:37,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:37,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:35:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 22:35:37,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:37,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993060656] [2024-11-09 22:35:37,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993060656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:37,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040625582] [2024-11-09 22:35:37,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:37,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:37,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:37,297 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) [2024-11-09 22:35:37,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 22:35:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:37,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:35:37,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:37,393 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 22:35:37,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 22:35:37,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040625582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:37,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:35:37,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-11-09 22:35:37,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606927652] [2024-11-09 22:35:37,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:37,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 22:35:37,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:37,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 22:35:37,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:35:37,480 INFO L87 Difference]: Start difference. First operand 293 states and 428 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 22:35:37,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:37,699 INFO L93 Difference]: Finished difference Result 731 states and 1037 transitions. [2024-11-09 22:35:37,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 22:35:37,699 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2024-11-09 22:35:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:37,704 INFO L225 Difference]: With dead ends: 731 [2024-11-09 22:35:37,704 INFO L226 Difference]: Without dead ends: 580 [2024-11-09 22:35:37,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-09 22:35:37,706 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 128 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:37,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 232 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-09 22:35:37,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 542. [2024-11-09 22:35:37,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 358 states have (on average 1.2988826815642458) internal successors, (465), 372 states have internal predecessors, (465), 142 states have call successors, (142), 41 states have call predecessors, (142), 41 states have return successors, (138), 128 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-09 22:35:37,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 745 transitions. [2024-11-09 22:35:37,779 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 745 transitions. Word has length 39 [2024-11-09 22:35:37,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:37,779 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 745 transitions. [2024-11-09 22:35:37,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 22:35:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 745 transitions. [2024-11-09 22:35:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 22:35:37,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:37,780 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:37,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 22:35:37,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 22:35:37,981 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:37,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:37,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1826984699, now seen corresponding path program 2 times [2024-11-09 22:35:37,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:37,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728289910] [2024-11-09 22:35:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:37,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:38,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:38,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:35:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:38,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728289910] [2024-11-09 22:35:38,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728289910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:38,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:38,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:35:38,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536979182] [2024-11-09 22:35:38,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:38,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:38,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:38,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:38,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:35:38,055 INFO L87 Difference]: Start difference. First operand 542 states and 745 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:38,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:38,182 INFO L93 Difference]: Finished difference Result 791 states and 1138 transitions. [2024-11-09 22:35:38,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:35:38,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2024-11-09 22:35:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:38,186 INFO L225 Difference]: With dead ends: 791 [2024-11-09 22:35:38,186 INFO L226 Difference]: Without dead ends: 645 [2024-11-09 22:35:38,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:35:38,188 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 29 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:38,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 178 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-11-09 22:35:38,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 540. [2024-11-09 22:35:38,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 360 states have (on average 1.3055555555555556) internal successors, (470), 374 states have internal predecessors, (470), 138 states have call successors, (138), 41 states have call predecessors, (138), 41 states have return successors, (134), 124 states have call predecessors, (134), 134 states have call successors, (134) [2024-11-09 22:35:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 742 transitions. [2024-11-09 22:35:38,258 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 742 transitions. Word has length 40 [2024-11-09 22:35:38,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:38,258 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 742 transitions. [2024-11-09 22:35:38,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:35:38,258 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 742 transitions. [2024-11-09 22:35:38,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 22:35:38,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:38,259 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:38,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 22:35:38,259 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:38,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:38,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2105908699, now seen corresponding path program 1 times [2024-11-09 22:35:38,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:38,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755976632] [2024-11-09 22:35:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:38,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:38,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:38,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:35:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:38,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:38,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755976632] [2024-11-09 22:35:38,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755976632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:38,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012147871] [2024-11-09 22:35:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:38,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:38,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:38,364 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) [2024-11-09 22:35:38,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 22:35:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:38,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 22:35:38,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:38,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:35:38,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012147871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:38,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:35:38,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2024-11-09 22:35:38,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041432517] [2024-11-09 22:35:38,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:38,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 22:35:38,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 22:35:38,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-09 22:35:38,548 INFO L87 Difference]: Start difference. First operand 540 states and 742 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 22:35:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:38,882 INFO L93 Difference]: Finished difference Result 1171 states and 1633 transitions. [2024-11-09 22:35:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 22:35:38,883 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2024-11-09 22:35:38,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:38,887 INFO L225 Difference]: With dead ends: 1171 [2024-11-09 22:35:38,888 INFO L226 Difference]: Without dead ends: 847 [2024-11-09 22:35:38,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:35:38,889 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 205 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:38,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 297 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:35:38,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-09 22:35:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 804. [2024-11-09 22:35:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 534 states have (on average 1.249063670411985) internal successors, (667), 556 states have internal predecessors, (667), 212 states have call successors, (212), 57 states have call predecessors, (212), 57 states have return successors, (206), 190 states have call predecessors, (206), 206 states have call successors, (206) [2024-11-09 22:35:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1085 transitions. [2024-11-09 22:35:38,979 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1085 transitions. Word has length 40 [2024-11-09 22:35:38,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:38,979 INFO L471 AbstractCegarLoop]: Abstraction has 804 states and 1085 transitions. [2024-11-09 22:35:38,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 22:35:38,979 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1085 transitions. [2024-11-09 22:35:38,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 22:35:38,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:38,980 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:38,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 22:35:39,184 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,SelfDestructingSolverStorable15 [2024-11-09 22:35:39,185 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:39,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2029609015, now seen corresponding path program 1 times [2024-11-09 22:35:39,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:39,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132829668] [2024-11-09 22:35:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:39,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:39,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334024196] [2024-11-09 22:35:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:39,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:39,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:39,201 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) [2024-11-09 22:35:39,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 22:35:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:39,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 22:35:39,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 22:35:40,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 22:35:41,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:41,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132829668] [2024-11-09 22:35:41,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:41,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334024196] [2024-11-09 22:35:41,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334024196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:41,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:35:41,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2024-11-09 22:35:41,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071941736] [2024-11-09 22:35:41,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:41,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 22:35:41,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:41,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 22:35:41,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2024-11-09 22:35:41,222 INFO L87 Difference]: Start difference. First operand 804 states and 1085 transitions. Second operand has 23 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 6 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-09 22:35:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:44,354 INFO L93 Difference]: Finished difference Result 1389 states and 1910 transitions. [2024-11-09 22:35:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 22:35:44,355 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 6 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 55 [2024-11-09 22:35:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:44,360 INFO L225 Difference]: With dead ends: 1389 [2024-11-09 22:35:44,361 INFO L226 Difference]: Without dead ends: 1054 [2024-11-09 22:35:44,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=398, Invalid=1672, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 22:35:44,362 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 264 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:44,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 747 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 22:35:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2024-11-09 22:35:44,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 899. [2024-11-09 22:35:44,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 607 states have (on average 1.2504118616144975) internal successors, (759), 625 states have internal predecessors, (759), 226 states have call successors, (226), 65 states have call predecessors, (226), 65 states have return successors, (222), 208 states have call predecessors, (222), 222 states have call successors, (222) [2024-11-09 22:35:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1207 transitions. [2024-11-09 22:35:44,580 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1207 transitions. Word has length 55 [2024-11-09 22:35:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:44,580 INFO L471 AbstractCegarLoop]: Abstraction has 899 states and 1207 transitions. [2024-11-09 22:35:44,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 6 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-09 22:35:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1207 transitions. [2024-11-09 22:35:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 22:35:44,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:44,581 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:44,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 22:35:44,783 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,SelfDestructingSolverStorable16 [2024-11-09 22:35:44,784 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:44,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:44,786 INFO L85 PathProgramCache]: Analyzing trace with hash -88730419, now seen corresponding path program 1 times [2024-11-09 22:35:44,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:44,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938727446] [2024-11-09 22:35:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:44,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:44,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:44,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:35:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:44,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-09 22:35:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:44,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 22:35:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:44,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-09 22:35:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:44,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-09 22:35:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 22:35:44,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:44,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938727446] [2024-11-09 22:35:44,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938727446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:44,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577163604] [2024-11-09 22:35:44,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:44,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:44,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:44,941 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:44,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 22:35:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:44,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 22:35:44,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 22:35:45,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 22:35:45,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577163604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:45,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:35:45,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 14 [2024-11-09 22:35:45,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713108854] [2024-11-09 22:35:45,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:45,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 22:35:45,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:45,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 22:35:45,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-09 22:35:45,180 INFO L87 Difference]: Start difference. First operand 899 states and 1207 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-09 22:35:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:45,573 INFO L93 Difference]: Finished difference Result 982 states and 1292 transitions. [2024-11-09 22:35:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 22:35:45,574 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 61 [2024-11-09 22:35:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:45,579 INFO L225 Difference]: With dead ends: 982 [2024-11-09 22:35:45,579 INFO L226 Difference]: Without dead ends: 959 [2024-11-09 22:35:45,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:35:45,580 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 145 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:45,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 253 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:35:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-11-09 22:35:45,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 926. [2024-11-09 22:35:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 634 states have (on average 1.2287066246056781) internal successors, (779), 652 states have internal predecessors, (779), 226 states have call successors, (226), 65 states have call predecessors, (226), 65 states have return successors, (222), 208 states have call predecessors, (222), 222 states have call successors, (222) [2024-11-09 22:35:45,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1227 transitions. [2024-11-09 22:35:45,800 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1227 transitions. Word has length 61 [2024-11-09 22:35:45,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:45,800 INFO L471 AbstractCegarLoop]: Abstraction has 926 states and 1227 transitions. [2024-11-09 22:35:45,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-09 22:35:45,801 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1227 transitions. [2024-11-09 22:35:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 22:35:45,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:45,801 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:45,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 22:35:46,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 22:35:46,006 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:46,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:46,006 INFO L85 PathProgramCache]: Analyzing trace with hash 878561253, now seen corresponding path program 1 times [2024-11-09 22:35:46,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:46,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606346729] [2024-11-09 22:35:46,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:46,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:46,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178009850] [2024-11-09 22:35:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:46,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:46,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:46,028 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:46,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 22:35:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:46,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 22:35:46,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:46,154 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-09 22:35:46,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-09 22:35:46,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:46,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606346729] [2024-11-09 22:35:46,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:46,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178009850] [2024-11-09 22:35:46,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178009850] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:46,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:35:46,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-09 22:35:46,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335048484] [2024-11-09 22:35:46,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:46,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:46,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:46,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:46,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:35:46,220 INFO L87 Difference]: Start difference. First operand 926 states and 1227 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 22:35:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:46,408 INFO L93 Difference]: Finished difference Result 949 states and 1249 transitions. [2024-11-09 22:35:46,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:35:46,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2024-11-09 22:35:46,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:46,414 INFO L225 Difference]: With dead ends: 949 [2024-11-09 22:35:46,414 INFO L226 Difference]: Without dead ends: 946 [2024-11-09 22:35:46,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:35:46,415 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:46,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 133 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2024-11-09 22:35:46,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 946. [2024-11-09 22:35:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 649 states have (on average 1.2203389830508475) internal successors, (792), 667 states have internal predecessors, (792), 226 states have call successors, (226), 70 states have call predecessors, (226), 70 states have return successors, (222), 208 states have call predecessors, (222), 222 states have call successors, (222) [2024-11-09 22:35:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1240 transitions. [2024-11-09 22:35:46,625 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1240 transitions. Word has length 64 [2024-11-09 22:35:46,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:46,625 INFO L471 AbstractCegarLoop]: Abstraction has 946 states and 1240 transitions. [2024-11-09 22:35:46,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 22:35:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1240 transitions. [2024-11-09 22:35:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 22:35:46,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:46,626 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1] [2024-11-09 22:35:46,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 22:35:46,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:46,827 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:46,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:46,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1736793084, now seen corresponding path program 1 times [2024-11-09 22:35:46,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:46,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214370033] [2024-11-09 22:35:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:46,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:46,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599124214] [2024-11-09 22:35:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:46,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:46,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:46,858 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:46,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 22:35:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:46,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 22:35:46,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 22:35:47,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:47,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:47,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214370033] [2024-11-09 22:35:47,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:47,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599124214] [2024-11-09 22:35:47,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599124214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:47,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:35:47,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-09 22:35:47,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958028952] [2024-11-09 22:35:47,503 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:47,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 22:35:47,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:47,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 22:35:47,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-09 22:35:47,504 INFO L87 Difference]: Start difference. First operand 946 states and 1240 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 13 states have internal predecessors, (45), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 22:35:48,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:48,119 INFO L93 Difference]: Finished difference Result 1068 states and 1419 transitions. [2024-11-09 22:35:48,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 22:35:48,120 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 13 states have internal predecessors, (45), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 67 [2024-11-09 22:35:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:48,125 INFO L225 Difference]: With dead ends: 1068 [2024-11-09 22:35:48,125 INFO L226 Difference]: Without dead ends: 1065 [2024-11-09 22:35:48,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2024-11-09 22:35:48,126 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 106 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:48,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 768 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:35:48,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2024-11-09 22:35:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1051. [2024-11-09 22:35:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 720 states have (on average 1.2347222222222223) internal successors, (889), 741 states have internal predecessors, (889), 258 states have call successors, (258), 72 states have call predecessors, (258), 72 states have return successors, (254), 237 states have call predecessors, (254), 254 states have call successors, (254) [2024-11-09 22:35:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1401 transitions. [2024-11-09 22:35:48,367 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1401 transitions. Word has length 67 [2024-11-09 22:35:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:48,367 INFO L471 AbstractCegarLoop]: Abstraction has 1051 states and 1401 transitions. [2024-11-09 22:35:48,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 13 states have internal predecessors, (45), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 22:35:48,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1401 transitions. [2024-11-09 22:35:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 22:35:48,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:48,370 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:48,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 22:35:48,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:48,576 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:48,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:48,576 INFO L85 PathProgramCache]: Analyzing trace with hash 622804696, now seen corresponding path program 2 times [2024-11-09 22:35:48,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:48,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273902604] [2024-11-09 22:35:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:48,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:48,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:48,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:35:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:48,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-09 22:35:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:48,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 22:35:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:48,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-09 22:35:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:48,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-09 22:35:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:48,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-09 22:35:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:48,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-09 22:35:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 22:35:48,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:48,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273902604] [2024-11-09 22:35:48,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273902604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:48,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:48,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:35:48,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548933818] [2024-11-09 22:35:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:48,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:48,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:48,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:48,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:35:48,667 INFO L87 Difference]: Start difference. First operand 1051 states and 1401 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 22:35:48,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:48,904 INFO L93 Difference]: Finished difference Result 1550 states and 2102 transitions. [2024-11-09 22:35:48,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:35:48,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2024-11-09 22:35:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:48,909 INFO L225 Difference]: With dead ends: 1550 [2024-11-09 22:35:48,909 INFO L226 Difference]: Without dead ends: 1024 [2024-11-09 22:35:48,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:35:48,911 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 3 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:48,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 135 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:48,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2024-11-09 22:35:49,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 996. [2024-11-09 22:35:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 697 states have (on average 1.2324246771879483) internal successors, (859), 701 states have internal predecessors, (859), 226 states have call successors, (226), 72 states have call predecessors, (226), 72 states have return successors, (222), 222 states have call predecessors, (222), 222 states have call successors, (222) [2024-11-09 22:35:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1307 transitions. [2024-11-09 22:35:49,126 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1307 transitions. Word has length 70 [2024-11-09 22:35:49,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:49,127 INFO L471 AbstractCegarLoop]: Abstraction has 996 states and 1307 transitions. [2024-11-09 22:35:49,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 22:35:49,127 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1307 transitions. [2024-11-09 22:35:49,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 22:35:49,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:49,128 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:49,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 22:35:49,128 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:49,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:49,129 INFO L85 PathProgramCache]: Analyzing trace with hash -756169522, now seen corresponding path program 3 times [2024-11-09 22:35:49,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:49,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591806289] [2024-11-09 22:35:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:49,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:49,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050239342] [2024-11-09 22:35:49,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:35:49,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:49,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:49,168 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:49,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 22:35:49,230 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 22:35:49,231 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:35:49,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-09 22:35:49,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 22:35:50,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:51,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:51,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591806289] [2024-11-09 22:35:51,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:51,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050239342] [2024-11-09 22:35:51,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050239342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:51,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:35:51,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-11-09 22:35:51,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765102794] [2024-11-09 22:35:51,676 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:51,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 22:35:51,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:51,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 22:35:51,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2024-11-09 22:35:51,677 INFO L87 Difference]: Start difference. First operand 996 states and 1307 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 16 states have internal predecessors, (48), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 22:35:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:52,395 INFO L93 Difference]: Finished difference Result 1051 states and 1356 transitions. [2024-11-09 22:35:52,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 22:35:52,396 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 16 states have internal predecessors, (48), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 72 [2024-11-09 22:35:52,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:52,400 INFO L225 Difference]: With dead ends: 1051 [2024-11-09 22:35:52,401 INFO L226 Difference]: Without dead ends: 1048 [2024-11-09 22:35:52,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 22:35:52,402 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 101 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:52,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 654 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:35:52,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2024-11-09 22:35:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1032. [2024-11-09 22:35:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 724 states have (on average 1.223756906077348) internal successors, (886), 728 states have internal predecessors, (886), 226 states have call successors, (226), 81 states have call predecessors, (226), 81 states have return successors, (222), 222 states have call predecessors, (222), 222 states have call successors, (222) [2024-11-09 22:35:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1334 transitions. [2024-11-09 22:35:52,584 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1334 transitions. Word has length 72 [2024-11-09 22:35:52,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:52,584 INFO L471 AbstractCegarLoop]: Abstraction has 1032 states and 1334 transitions. [2024-11-09 22:35:52,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 16 states have internal predecessors, (48), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 22:35:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1334 transitions. [2024-11-09 22:35:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 22:35:52,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:52,586 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 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] [2024-11-09 22:35:52,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 22:35:52,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:52,790 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:52,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:52,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1743766732, now seen corresponding path program 1 times [2024-11-09 22:35:52,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:52,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566989059] [2024-11-09 22:35:52,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:52,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:52,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892149375] [2024-11-09 22:35:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:52,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:52,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:52,808 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:52,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 22:35:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:52,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 22:35:52,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-09 22:35:53,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 23 proven. 17 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 22:35:53,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:53,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566989059] [2024-11-09 22:35:53,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:53,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892149375] [2024-11-09 22:35:53,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892149375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:53,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:35:53,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-11-09 22:35:53,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004103496] [2024-11-09 22:35:53,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:53,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 22:35:53,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:53,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 22:35:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:35:53,528 INFO L87 Difference]: Start difference. First operand 1032 states and 1334 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-09 22:35:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:54,897 INFO L93 Difference]: Finished difference Result 1682 states and 2367 transitions. [2024-11-09 22:35:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 22:35:54,898 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 86 [2024-11-09 22:35:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:54,905 INFO L225 Difference]: With dead ends: 1682 [2024-11-09 22:35:54,905 INFO L226 Difference]: Without dead ends: 1677 [2024-11-09 22:35:54,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=345, Invalid=1215, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 22:35:54,907 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 196 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:54,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 524 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 22:35:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2024-11-09 22:35:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1559. [2024-11-09 22:35:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 996 states have (on average 1.3012048192771084) internal successors, (1296), 999 states have internal predecessors, (1296), 470 states have call successors, (470), 93 states have call predecessors, (470), 92 states have return successors, (466), 466 states have call predecessors, (466), 466 states have call successors, (466) [2024-11-09 22:35:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2232 transitions. [2024-11-09 22:35:55,288 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2232 transitions. Word has length 86 [2024-11-09 22:35:55,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:55,288 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2232 transitions. [2024-11-09 22:35:55,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-09 22:35:55,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2232 transitions. [2024-11-09 22:35:55,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 22:35:55,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:55,290 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:55,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 22:35:55,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 22:35:55,490 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:55,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:55,491 INFO L85 PathProgramCache]: Analyzing trace with hash 483778539, now seen corresponding path program 1 times [2024-11-09 22:35:55,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:55,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455419313] [2024-11-09 22:35:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:55,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:55,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454876116] [2024-11-09 22:35:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:55,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:55,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:55,507 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:55,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 22:35:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:55,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-09 22:35:55,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 30 proven. 36 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 22:35:56,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 30 proven. 33 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-09 22:35:59,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:59,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455419313] [2024-11-09 22:35:59,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:59,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454876116] [2024-11-09 22:35:59,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454876116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:59,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:35:59,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 33 [2024-11-09 22:35:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135766921] [2024-11-09 22:35:59,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:59,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 22:35:59,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 22:35:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 22:35:59,250 INFO L87 Difference]: Start difference. First operand 1559 states and 2232 transitions. Second operand has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 31 states have internal predecessors, (78), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-09 22:36:11,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:36:11,429 INFO L93 Difference]: Finished difference Result 2107 states and 3057 transitions. [2024-11-09 22:36:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-09 22:36:11,429 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 31 states have internal predecessors, (78), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 85 [2024-11-09 22:36:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:36:11,439 INFO L225 Difference]: With dead ends: 2107 [2024-11-09 22:36:11,439 INFO L226 Difference]: Without dead ends: 2089 [2024-11-09 22:36:11,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2304 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1654, Invalid=6178, Unknown=0, NotChecked=0, Total=7832 [2024-11-09 22:36:11,442 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 525 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 22:36:11,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1409 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-09 22:36:11,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2024-11-09 22:36:12,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1864. [2024-11-09 22:36:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1226 states have (on average 1.330342577487765) internal successors, (1631), 1229 states have internal predecessors, (1631), 541 states have call successors, (541), 96 states have call predecessors, (541), 96 states have return successors, (538), 538 states have call predecessors, (538), 538 states have call successors, (538) [2024-11-09 22:36:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2710 transitions. [2024-11-09 22:36:12,289 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2710 transitions. Word has length 85 [2024-11-09 22:36:12,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:36:12,290 INFO L471 AbstractCegarLoop]: Abstraction has 1864 states and 2710 transitions. [2024-11-09 22:36:12,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 31 states have internal predecessors, (78), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-09 22:36:12,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2710 transitions. [2024-11-09 22:36:12,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-09 22:36:12,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:36:12,291 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:36:12,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 22:36:12,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:36:12,496 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:36:12,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:36:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1548444222, now seen corresponding path program 1 times [2024-11-09 22:36:12,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:36:12,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597322987] [2024-11-09 22:36:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:36:12,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:36:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:36:12,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826042251] [2024-11-09 22:36:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:36:12,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:36:12,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:36:12,520 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:36:12,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 22:36:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:12,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 22:36:12,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:36:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 22:36:13,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:36:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-09 22:36:14,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:36:14,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597322987] [2024-11-09 22:36:14,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:36:14,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826042251] [2024-11-09 22:36:14,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826042251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:36:14,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:36:14,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2024-11-09 22:36:14,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445592440] [2024-11-09 22:36:14,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:36:14,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 22:36:14,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:36:14,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 22:36:14,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-11-09 22:36:14,848 INFO L87 Difference]: Start difference. First operand 1864 states and 2710 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 20 states have internal predecessors, (69), 8 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-09 22:36:25,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:36:25,382 INFO L93 Difference]: Finished difference Result 2644 states and 3986 transitions. [2024-11-09 22:36:25,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-09 22:36:25,383 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 20 states have internal predecessors, (69), 8 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 88 [2024-11-09 22:36:25,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:36:25,394 INFO L225 Difference]: With dead ends: 2644 [2024-11-09 22:36:25,394 INFO L226 Difference]: Without dead ends: 2637 [2024-11-09 22:36:25,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1517 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1114, Invalid=4142, Unknown=0, NotChecked=0, Total=5256 [2024-11-09 22:36:25,396 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 315 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 22:36:25,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1072 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 22:36:25,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2024-11-09 22:36:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2253. [2024-11-09 22:36:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 1462 states have (on average 1.3577291381668946) internal successors, (1985), 1463 states have internal predecessors, (1985), 688 states have call successors, (688), 103 states have call predecessors, (688), 102 states have return successors, (686), 686 states have call predecessors, (686), 686 states have call successors, (686) [2024-11-09 22:36:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 3359 transitions. [2024-11-09 22:36:26,810 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 3359 transitions. Word has length 88 [2024-11-09 22:36:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:36:26,811 INFO L471 AbstractCegarLoop]: Abstraction has 2253 states and 3359 transitions. [2024-11-09 22:36:26,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 20 states have internal predecessors, (69), 8 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-09 22:36:26,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 3359 transitions. [2024-11-09 22:36:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 22:36:26,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:36:26,813 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:36:26,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 22:36:27,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:36:27,017 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:36:27,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:36:27,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1583065406, now seen corresponding path program 1 times [2024-11-09 22:36:27,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:36:27,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469737802] [2024-11-09 22:36:27,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:36:27,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:36:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:27,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:36:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:27,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:36:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:27,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-09 22:36:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:27,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 22:36:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:27,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-09 22:36:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:27,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-09 22:36:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:27,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 22:36:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:27,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 22:36:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:27,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-09 22:36:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:27,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-09 22:36:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 24 proven. 44 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-09 22:36:27,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:36:27,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469737802] [2024-11-09 22:36:27,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469737802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:36:27,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398062218] [2024-11-09 22:36:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:36:27,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:36:27,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:36:27,301 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:36:27,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 22:36:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:27,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 22:36:27,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:36:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 24 proven. 108 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-09 22:36:27,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:36:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 24 proven. 44 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-09 22:36:27,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398062218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:36:27,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:36:27,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 13 [2024-11-09 22:36:27,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279520632] [2024-11-09 22:36:27,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:36:27,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 22:36:27,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:36:27,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 22:36:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:36:27,621 INFO L87 Difference]: Start difference. First operand 2253 states and 3359 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-09 22:36:29,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:36:29,141 INFO L93 Difference]: Finished difference Result 3031 states and 4628 transitions. [2024-11-09 22:36:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 22:36:29,142 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 94 [2024-11-09 22:36:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:36:29,151 INFO L225 Difference]: With dead ends: 3031 [2024-11-09 22:36:29,151 INFO L226 Difference]: Without dead ends: 2285 [2024-11-09 22:36:29,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 196 SyntacticMatches, 11 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2024-11-09 22:36:29,154 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 145 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:36:29,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 229 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:36:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2024-11-09 22:36:30,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2276. [2024-11-09 22:36:30,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 1485 states have (on average 1.3454545454545455) internal successors, (1998), 1486 states have internal predecessors, (1998), 688 states have call successors, (688), 103 states have call predecessors, (688), 102 states have return successors, (686), 686 states have call predecessors, (686), 686 states have call successors, (686) [2024-11-09 22:36:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3372 transitions. [2024-11-09 22:36:30,590 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3372 transitions. Word has length 94 [2024-11-09 22:36:30,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:36:30,591 INFO L471 AbstractCegarLoop]: Abstraction has 2276 states and 3372 transitions. [2024-11-09 22:36:30,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-09 22:36:30,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3372 transitions. [2024-11-09 22:36:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 22:36:30,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:36:30,593 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:36:30,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 22:36:30,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:36:30,798 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:36:30,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:36:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash -945692287, now seen corresponding path program 4 times [2024-11-09 22:36:30,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:36:30,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121940376] [2024-11-09 22:36:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:36:30,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:36:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:31,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:36:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:31,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 22:36:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:31,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:36:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:31,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:36:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:31,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:36:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:31,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 22:36:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:31,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-09 22:36:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:31,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-09 22:36:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:31,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 22:36:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:31,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-09 22:36:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:36:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-09 22:36:31,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:36:31,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121940376] [2024-11-09 22:36:31,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121940376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:36:31,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696821624] [2024-11-09 22:36:31,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:36:31,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:36:31,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:36:31,088 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:36:31,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 22:36:31,152 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:36:31,152 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:36:31,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 22:36:31,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:36:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 30 proven. 64 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 22:36:32,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:36:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 65 proven. 10 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-09 22:36:32,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696821624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:36:32,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:36:32,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 8] total 37 [2024-11-09 22:36:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809314186] [2024-11-09 22:36:32,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:36:32,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 22:36:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:36:32,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 22:36:32,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 22:36:32,196 INFO L87 Difference]: Start difference. First operand 2276 states and 3372 transitions. Second operand has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 33 states have internal predecessors, (127), 12 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2024-11-09 22:36:39,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:36:39,808 INFO L93 Difference]: Finished difference Result 2934 states and 4287 transitions. [2024-11-09 22:36:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-09 22:36:39,809 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 33 states have internal predecessors, (127), 12 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) Word has length 94 [2024-11-09 22:36:39,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:36:39,814 INFO L225 Difference]: With dead ends: 2934 [2024-11-09 22:36:39,815 INFO L226 Difference]: Without dead ends: 1492 [2024-11-09 22:36:39,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5803 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2702, Invalid=16758, Unknown=0, NotChecked=0, Total=19460 [2024-11-09 22:36:39,823 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 371 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 5039 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 5251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 5039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 22:36:39,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 3177 Invalid, 5251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 5039 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 22:36:39,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2024-11-09 22:36:40,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 986. [2024-11-09 22:36:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 708 states have (on average 1.1228813559322033) internal successors, (795), 715 states have internal predecessors, (795), 175 states have call successors, (175), 103 states have call predecessors, (175), 102 states have return successors, (173), 167 states have call predecessors, (173), 173 states have call successors, (173) [2024-11-09 22:36:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1143 transitions. [2024-11-09 22:36:40,170 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1143 transitions. Word has length 94 [2024-11-09 22:36:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:36:40,170 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 1143 transitions. [2024-11-09 22:36:40,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 33 states have internal predecessors, (127), 12 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2024-11-09 22:36:40,171 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1143 transitions. [2024-11-09 22:36:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 22:36:40,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:36:40,174 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:36:40,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 22:36:40,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 22:36:40,378 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:36:40,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:36:40,378 INFO L85 PathProgramCache]: Analyzing trace with hash -86485616, now seen corresponding path program 2 times [2024-11-09 22:36:40,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:36:40,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285193771] [2024-11-09 22:36:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:36:40,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:36:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:36:40,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892758491] [2024-11-09 22:36:40,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:36:40,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:36:40,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:36:40,408 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:36:40,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 22:36:40,545 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:36:40,545 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-09 22:36:40,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 22:36:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 22:36:40,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 22:36:40,643 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 22:36:40,645 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 22:36:40,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 22:36:40,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 22:36:40,850 INFO L407 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:36:40,915 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 22:36:40,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:36:40 BoogieIcfgContainer [2024-11-09 22:36:40,922 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 22:36:40,923 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 22:36:40,923 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 22:36:40,923 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 22:36:40,924 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:35:31" (3/4) ... [2024-11-09 22:36:40,924 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 22:36:41,009 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 22:36:41,013 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 22:36:41,014 INFO L158 Benchmark]: Toolchain (without parser) took 70674.78ms. Allocated memory was 136.3MB in the beginning and 1.0GB in the end (delta: 887.1MB). Free memory was 80.8MB in the beginning and 961.6MB in the end (delta: -880.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 22:36:41,014 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 136.3MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 22:36:41,014 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.50ms. Allocated memory is still 136.3MB. Free memory was 80.5MB in the beginning and 67.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 22:36:41,014 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.99ms. Allocated memory is still 136.3MB. Free memory was 67.6MB in the beginning and 65.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 22:36:41,014 INFO L158 Benchmark]: Boogie Preprocessor took 28.86ms. Allocated memory is still 136.3MB. Free memory was 65.8MB in the beginning and 64.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 22:36:41,014 INFO L158 Benchmark]: IcfgBuilder took 376.34ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 64.2MB in the beginning and 148.6MB in the end (delta: -84.4MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2024-11-09 22:36:41,015 INFO L158 Benchmark]: TraceAbstraction took 69848.48ms. Allocated memory was 180.4MB in the beginning and 1.0GB in the end (delta: 843.1MB). Free memory was 147.6MB in the beginning and 966.8MB in the end (delta: -819.3MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2024-11-09 22:36:41,015 INFO L158 Benchmark]: Witness Printer took 90.43ms. Allocated memory is still 1.0GB. Free memory was 966.8MB in the beginning and 961.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 22:36:41,018 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 136.3MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.50ms. Allocated memory is still 136.3MB. Free memory was 80.5MB in the beginning and 67.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.99ms. Allocated memory is still 136.3MB. Free memory was 67.6MB in the beginning and 65.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.86ms. Allocated memory is still 136.3MB. Free memory was 65.8MB in the beginning and 64.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 376.34ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 64.2MB in the beginning and 148.6MB in the end (delta: -84.4MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * TraceAbstraction took 69848.48ms. Allocated memory was 180.4MB in the beginning and 1.0GB in the end (delta: 843.1MB). Free memory was 147.6MB in the beginning and 966.8MB in the end (delta: -819.3MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. * Witness Printer took 90.43ms. Allocated memory is still 1.0GB. Free memory was 966.8MB in the beginning and 961.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=3, y=5] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=3, y=5] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [a=3, b=5, counter=0, p=1, q=0, r=0, s=1, x=3, y=5] [L34] EXPR counter++ VAL [a=3, b=5, counter=1, p=1, q=0, r=0, s=1, x=3, y=5] [L34] COND TRUE counter++<10 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [a=3, b=5, c=3, counter=1, k=0, p=1, q=0, r=0, s=1, x=3, y=5] [L41] EXPR counter++ VAL [a=3, b=5, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, y=5] [L41] COND TRUE counter++<10 [L42] COND TRUE !(c >= b) VAL [a=3, b=5, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, y=5] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k [L34] EXPR counter++ VAL [a=5, b=3, counter=3, p=0, q=1, r=1, s=0, x=3, y=5] [L34] COND TRUE counter++<10 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [a=5, b=3, c=5, counter=3, k=0, p=0, q=1, r=1, s=0, x=3, y=5] [L41] EXPR counter++ VAL [a=5, b=3, c=5, counter=4, k=0, p=0, q=1, r=1, s=0, x=3, y=5] [L41] COND TRUE counter++<10 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [a=5, b=3, c=5, counter=4, d=1, k=0, p=0, q=1, r=1, s=0, v=3, x=3, y=5] [L48] EXPR counter++ VAL [a=5, b=3, c=5, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, v=3, x=3, y=5] [L48] COND TRUE counter++<10 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=5, b=3, c=5, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, v=3, x=3, y=5] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=5, b=3, c=5, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, v=3, x=3, y=5] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [a=5, b=3, c=5, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, v=3, x=3, y=5] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L52] RET __VERIFIER_assert(v == b * d) VAL [a=5, b=3, c=5, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, v=3, x=3, y=5] [L54] COND TRUE !(c >= 2 * v) VAL [a=5, b=3, c=5, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, v=3, x=3, y=5] [L59] c = c - v [L60] k = k + d [L41] EXPR counter++ VAL [a=5, b=3, c=2, counter=6, k=1, p=0, q=1, r=1, s=0, x=3, y=5] [L41] COND TRUE counter++<10 [L42] COND TRUE !(c >= b) VAL [a=5, b=3, c=2, counter=6, k=1, p=0, q=1, r=1, s=0, x=3, y=5] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k [L34] EXPR counter++ VAL [a=3, b=2, counter=7, p=1, q=-1, r=0, s=1, x=3, y=5] [L34] COND TRUE counter++<10 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [a=3, b=2, c=3, counter=7, k=0, p=1, q=-1, r=0, s=1, x=3, y=5] [L41] EXPR counter++ VAL [a=3, b=2, c=3, counter=8, k=0, p=1, q=-1, r=0, s=1, x=3, y=5] [L41] COND TRUE counter++<10 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [a=3, b=2, c=3, counter=8, d=1, k=0, p=1, q=-1, r=0, s=1, v=2, x=3, y=5] [L48] EXPR counter++ VAL [a=3, b=2, c=3, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, v=2, x=3, y=5] [L48] COND TRUE counter++<10 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=9] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=3, b=2, c=3, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, v=2, x=3, y=5] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=9] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=3, b=2, c=3, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, v=2, x=3, y=5] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=9] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [a=3, b=2, c=3, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, v=2, x=3, y=5] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=9] [L52] RET __VERIFIER_assert(v == b * d) VAL [a=3, b=2, c=3, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, v=2, x=3, y=5] [L54] COND TRUE !(c >= 2 * v) VAL [a=3, b=2, c=3, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, v=2, x=3, y=5] [L59] c = c - v [L60] k = k + d [L41] EXPR counter++ VAL [a=3, b=2, c=1, counter=10, k=1, p=1, q=-1, r=0, s=1, x=3, y=5] [L41] COND TRUE counter++<10 [L42] COND TRUE !(c >= b) VAL [a=3, b=2, c=1, counter=10, k=1, p=1, q=-1, r=0, s=1, x=3, y=5] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k [L34] EXPR counter++ VAL [a=2, b=1, counter=11, p=-1, q=2, r=1, s=-1, x=3, y=5] [L34] COND FALSE !(counter++<10) [L73] CALL __VERIFIER_assert(p*x - q*x + r*y - s*y == a) VAL [\old(cond)=0, counter=11] [L11] COND TRUE !(cond) VAL [\old(cond)=0, counter=11] [L13] reach_error() VAL [\old(cond)=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.7s, OverallIterations: 28, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 40.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2972 SdHoareTripleChecker+Valid, 16.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2887 mSDsluCounter, 11848 SdHoareTripleChecker+Invalid, 15.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10392 mSDsCounter, 1391 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10278 IncrementalHoareTripleChecker+Invalid, 11669 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1391 mSolverCounterUnsat, 1456 mSDtfsCounter, 10278 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2454 GetRequests, 1841 SyntacticMatches, 25 SemanticMatches, 588 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10918 ImplicationChecksByTransitivity, 23.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2276occurred in iteration=26, InterpolantAutomatonStates: 501, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.2s AutomataMinimizationTime, 27 MinimizatonAttempts, 1804 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 16.4s InterpolantComputationTime, 2629 NumberOfCodeBlocks, 2612 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2464 ConstructedInterpolants, 17 QuantifiedInterpolants, 14921 SizeOfPredicates, 63 NumberOfNonLiveVariables, 3248 ConjunctsInSsa, 526 ConjunctsInUnsatCore, 47 InterpolantComputations, 12 PerfectInterpolantSequences, 2622/3277 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-09 22:36:41,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE