./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 7bfb32b49701ea1484553c69a9c6c976094bd0d4ca4d5ea9d4d30cdc2f2571dd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 03:02:40,388 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 03:02:40,481 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-10 03:02:40,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 03:02:40,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 03:02:40,520 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 03:02:40,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 03:02:40,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 03:02:40,522 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 03:02:40,523 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 03:02:40,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 03:02:40,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 03:02:40,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 03:02:40,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 03:02:40,527 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 03:02:40,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 03:02:40,528 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 03:02:40,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 03:02:40,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 03:02:40,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 03:02:40,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 03:02:40,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 03:02:40,534 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 03:02:40,534 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 03:02:40,534 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 03:02:40,534 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 03:02:40,535 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 03:02:40,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 03:02:40,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 03:02:40,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 03:02:40,536 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 03:02:40,536 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 03:02:40,536 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 03:02:40,537 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 03:02:40,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 03:02:40,539 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 03:02:40,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 03:02:40,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 03:02:40,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 03:02:40,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bfb32b49701ea1484553c69a9c6c976094bd0d4ca4d5ea9d4d30cdc2f2571dd [2024-11-10 03:02:40,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 03:02:40,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 03:02:40,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 03:02:40,843 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 03:02:40,844 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 03:02:40,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c [2024-11-10 03:02:42,244 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 03:02:42,479 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 03:02:42,480 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c [2024-11-10 03:02:42,489 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d95969090/a9338aba36eb41889a3c59abdd4bd05c/FLAGf53e864ef [2024-11-10 03:02:42,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d95969090/a9338aba36eb41889a3c59abdd4bd05c [2024-11-10 03:02:42,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 03:02:42,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 03:02:42,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 03:02:42,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 03:02:42,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 03:02:42,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:02:42" (1/1) ... [2024-11-10 03:02:42,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c168ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:42, skipping insertion in model container [2024-11-10 03:02:42,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:02:42" (1/1) ... [2024-11-10 03:02:42,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 03:02:43,037 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c[1255,1268] [2024-11-10 03:02:43,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 03:02:43,203 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 03:02:43,212 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c[1255,1268] [2024-11-10 03:02:43,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 03:02:43,328 INFO L204 MainTranslator]: Completed translation [2024-11-10 03:02:43,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43 WrapperNode [2024-11-10 03:02:43,329 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 03:02:43,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 03:02:43,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 03:02:43,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 03:02:43,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (1/1) ... [2024-11-10 03:02:43,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (1/1) ... [2024-11-10 03:02:43,579 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1243 [2024-11-10 03:02:43,579 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 03:02:43,580 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 03:02:43,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 03:02:43,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 03:02:43,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (1/1) ... [2024-11-10 03:02:43,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (1/1) ... [2024-11-10 03:02:43,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (1/1) ... [2024-11-10 03:02:43,697 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]. [2024-11-10 03:02:43,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (1/1) ... [2024-11-10 03:02:43,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (1/1) ... [2024-11-10 03:02:43,759 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (1/1) ... [2024-11-10 03:02:43,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (1/1) ... [2024-11-10 03:02:43,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (1/1) ... [2024-11-10 03:02:43,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (1/1) ... [2024-11-10 03:02:43,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 03:02:43,825 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 03:02:43,826 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 03:02:43,826 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 03:02:43,827 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (1/1) ... [2024-11-10 03:02:43,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 03:02:43,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:02:43,861 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) [2024-11-10 03:02:43,864 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 [2024-11-10 03:02:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 03:02:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 03:02:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 03:02:43,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 03:02:44,081 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 03:02:44,083 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 03:02:45,573 INFO L? ?]: Removed 682 outVars from TransFormulas that were not future-live. [2024-11-10 03:02:45,573 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 03:02:45,641 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 03:02:45,642 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 03:02:45,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:02:45 BoogieIcfgContainer [2024-11-10 03:02:45,642 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 03:02:45,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 03:02:45,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 03:02:45,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 03:02:45,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:02:42" (1/3) ... [2024-11-10 03:02:45,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5824de99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:02:45, skipping insertion in model container [2024-11-10 03:02:45,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:43" (2/3) ... [2024-11-10 03:02:45,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5824de99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:02:45, skipping insertion in model container [2024-11-10 03:02:45,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:02:45" (3/3) ... [2024-11-10 03:02:45,650 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_palu.c [2024-11-10 03:02:45,666 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 03:02:45,666 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 03:02:45,739 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 03:02:45,747 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;@341f416b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 03:02:45,748 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-10 03:02:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 365 states, 363 states have (on average 1.4931129476584022) internal successors, (542), 364 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-10 03:02:45,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:45,765 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:45,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:45,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash 953965701, now seen corresponding path program 1 times [2024-11-10 03:02:45,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926710008] [2024-11-10 03:02:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:45,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:46,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:46,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926710008] [2024-11-10 03:02:46,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926710008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:02:46,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:02:46,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 03:02:46,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084609016] [2024-11-10 03:02:46,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:02:46,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 03:02:46,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 03:02:46,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 03:02:46,830 INFO L87 Difference]: Start difference. First operand has 365 states, 363 states have (on average 1.4931129476584022) internal successors, (542), 364 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:47,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:47,140 INFO L93 Difference]: Finished difference Result 685 states and 1021 transitions. [2024-11-10 03:02:47,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 03:02:47,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-10 03:02:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:47,160 INFO L225 Difference]: With dead ends: 685 [2024-11-10 03:02:47,160 INFO L226 Difference]: Without dead ends: 362 [2024-11-10 03:02:47,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 03:02:47,169 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 0 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:47,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1333 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 03:02:47,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-10 03:02:47,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2024-11-10 03:02:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.4903047091412742) internal successors, (538), 361 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:47,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 538 transitions. [2024-11-10 03:02:47,221 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 538 transitions. Word has length 52 [2024-11-10 03:02:47,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:47,221 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 538 transitions. [2024-11-10 03:02:47,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 538 transitions. [2024-11-10 03:02:47,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-10 03:02:47,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:47,224 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:47,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 03:02:47,224 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:47,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash -346780509, now seen corresponding path program 1 times [2024-11-10 03:02:47,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:47,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054599227] [2024-11-10 03:02:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:47,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:47,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:47,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054599227] [2024-11-10 03:02:47,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054599227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:02:47,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:02:47,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 03:02:47,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667386738] [2024-11-10 03:02:47,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:02:47,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 03:02:47,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:47,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 03:02:47,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 03:02:47,517 INFO L87 Difference]: Start difference. First operand 362 states and 538 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:47,731 INFO L93 Difference]: Finished difference Result 684 states and 1017 transitions. [2024-11-10 03:02:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 03:02:47,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-10 03:02:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:47,733 INFO L225 Difference]: With dead ends: 684 [2024-11-10 03:02:47,733 INFO L226 Difference]: Without dead ends: 364 [2024-11-10 03:02:47,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 03:02:47,738 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 0 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:47,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 03:02:47,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-10 03:02:47,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2024-11-10 03:02:47,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.487603305785124) internal successors, (540), 363 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 540 transitions. [2024-11-10 03:02:47,764 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 540 transitions. Word has length 53 [2024-11-10 03:02:47,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:47,765 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 540 transitions. [2024-11-10 03:02:47,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:47,765 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 540 transitions. [2024-11-10 03:02:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-10 03:02:47,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:47,768 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:47,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 03:02:47,768 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:47,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:47,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1881950122, now seen corresponding path program 1 times [2024-11-10 03:02:47,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:47,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224406058] [2024-11-10 03:02:47,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:47,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:48,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:48,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224406058] [2024-11-10 03:02:48,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224406058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:02:48,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:02:48,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 03:02:48,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934740805] [2024-11-10 03:02:48,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:02:48,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 03:02:48,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:48,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 03:02:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 03:02:48,164 INFO L87 Difference]: Start difference. First operand 364 states and 540 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:48,378 INFO L93 Difference]: Finished difference Result 688 states and 1021 transitions. [2024-11-10 03:02:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 03:02:48,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-10 03:02:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:48,380 INFO L225 Difference]: With dead ends: 688 [2024-11-10 03:02:48,380 INFO L226 Difference]: Without dead ends: 366 [2024-11-10 03:02:48,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 03:02:48,382 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 0 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:48,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 03:02:48,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-10 03:02:48,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2024-11-10 03:02:48,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 1.484931506849315) internal successors, (542), 365 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 542 transitions. [2024-11-10 03:02:48,397 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 542 transitions. Word has length 54 [2024-11-10 03:02:48,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:48,400 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 542 transitions. [2024-11-10 03:02:48,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 542 transitions. [2024-11-10 03:02:48,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-10 03:02:48,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:48,402 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:48,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 03:02:48,402 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:48,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:48,403 INFO L85 PathProgramCache]: Analyzing trace with hash 915574782, now seen corresponding path program 1 times [2024-11-10 03:02:48,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:48,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048442369] [2024-11-10 03:02:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:48,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:48,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:48,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:48,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048442369] [2024-11-10 03:02:48,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048442369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:02:48,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:02:48,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 03:02:48,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665149617] [2024-11-10 03:02:48,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:02:48,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 03:02:48,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:48,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 03:02:48,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 03:02:48,671 INFO L87 Difference]: Start difference. First operand 366 states and 542 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:48,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:48,912 INFO L93 Difference]: Finished difference Result 720 states and 1067 transitions. [2024-11-10 03:02:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 03:02:48,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-10 03:02:48,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:48,914 INFO L225 Difference]: With dead ends: 720 [2024-11-10 03:02:48,914 INFO L226 Difference]: Without dead ends: 396 [2024-11-10 03:02:48,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 03:02:48,918 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 28 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:48,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1770 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 03:02:48,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-10 03:02:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2024-11-10 03:02:48,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.4835443037974683) internal successors, (586), 395 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:48,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 586 transitions. [2024-11-10 03:02:48,930 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 586 transitions. Word has length 55 [2024-11-10 03:02:48,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:48,932 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 586 transitions. [2024-11-10 03:02:48,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:48,932 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 586 transitions. [2024-11-10 03:02:48,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-10 03:02:48,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:48,936 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:48,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 03:02:48,936 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:48,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:48,937 INFO L85 PathProgramCache]: Analyzing trace with hash 316783698, now seen corresponding path program 1 times [2024-11-10 03:02:48,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:48,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053198903] [2024-11-10 03:02:48,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:48,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:49,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:49,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053198903] [2024-11-10 03:02:49,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053198903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:02:49,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:02:49,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 03:02:49,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69173008] [2024-11-10 03:02:49,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:02:49,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 03:02:49,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:49,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 03:02:49,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:02:49,567 INFO L87 Difference]: Start difference. First operand 396 states and 586 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:49,908 INFO L93 Difference]: Finished difference Result 756 states and 1119 transitions. [2024-11-10 03:02:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 03:02:49,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-10 03:02:49,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:49,911 INFO L225 Difference]: With dead ends: 756 [2024-11-10 03:02:49,911 INFO L226 Difference]: Without dead ends: 402 [2024-11-10 03:02:49,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-10 03:02:49,913 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 524 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:49,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 2211 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 03:02:49,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-10 03:02:49,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2024-11-10 03:02:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.4812967581047383) internal successors, (594), 401 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 594 transitions. [2024-11-10 03:02:49,922 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 594 transitions. Word has length 56 [2024-11-10 03:02:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:49,923 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 594 transitions. [2024-11-10 03:02:49,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 594 transitions. [2024-11-10 03:02:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-10 03:02:49,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:49,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:49,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 03:02:49,925 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:49,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash 187528628, now seen corresponding path program 1 times [2024-11-10 03:02:49,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:49,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681343950] [2024-11-10 03:02:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:49,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:50,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:50,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681343950] [2024-11-10 03:02:50,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681343950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:02:50,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:02:50,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 03:02:50,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774126119] [2024-11-10 03:02:50,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:02:50,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 03:02:50,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:50,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 03:02:50,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 03:02:50,180 INFO L87 Difference]: Start difference. First operand 402 states and 594 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:50,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:50,473 INFO L93 Difference]: Finished difference Result 1059 states and 1566 transitions. [2024-11-10 03:02:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 03:02:50,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-10 03:02:50,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:50,477 INFO L225 Difference]: With dead ends: 1059 [2024-11-10 03:02:50,478 INFO L226 Difference]: Without dead ends: 699 [2024-11-10 03:02:50,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-10 03:02:50,480 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 1392 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:50,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 1309 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 03:02:50,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-10 03:02:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 404. [2024-11-10 03:02:50,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.478908188585608) internal successors, (596), 403 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:50,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 596 transitions. [2024-11-10 03:02:50,495 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 596 transitions. Word has length 57 [2024-11-10 03:02:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:50,496 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 596 transitions. [2024-11-10 03:02:50,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:50,498 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 596 transitions. [2024-11-10 03:02:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-10 03:02:50,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:50,504 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:50,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 03:02:50,504 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:50,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:50,505 INFO L85 PathProgramCache]: Analyzing trace with hash -955016184, now seen corresponding path program 1 times [2024-11-10 03:02:50,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:50,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940970009] [2024-11-10 03:02:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:50,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:51,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:51,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940970009] [2024-11-10 03:02:51,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940970009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:02:51,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343153036] [2024-11-10 03:02:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:51,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:02:51,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:02:51,659 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) [2024-11-10 03:02:51,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 03:02:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:52,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 03:02:52,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:02:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:52,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:02:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:53,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343153036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:02:53,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:02:53,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-10 03:02:53,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457858793] [2024-11-10 03:02:53,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:02:53,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 03:02:53,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:53,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 03:02:53,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-10 03:02:53,221 INFO L87 Difference]: Start difference. First operand 404 states and 596 transitions. Second operand has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:54,250 INFO L93 Difference]: Finished difference Result 1521 states and 2253 transitions. [2024-11-10 03:02:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 03:02:54,251 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-10 03:02:54,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:54,256 INFO L225 Difference]: With dead ends: 1521 [2024-11-10 03:02:54,256 INFO L226 Difference]: Without dead ends: 702 [2024-11-10 03:02:54,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-10 03:02:54,258 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 4042 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4042 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:54,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4042 Valid, 3325 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-10 03:02:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-11-10 03:02:54,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 700. [2024-11-10 03:02:54,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 699 states have (on average 1.4778254649499285) internal successors, (1033), 699 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:54,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1033 transitions. [2024-11-10 03:02:54,280 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1033 transitions. Word has length 216 [2024-11-10 03:02:54,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:54,280 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 1033 transitions. [2024-11-10 03:02:54,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:54,281 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1033 transitions. [2024-11-10 03:02:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-10 03:02:54,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:54,283 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:54,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 03:02:54,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:02:54,488 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:54,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:54,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1175531779, now seen corresponding path program 1 times [2024-11-10 03:02:54,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:54,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504958792] [2024-11-10 03:02:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:54,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 03:02:56,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:56,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504958792] [2024-11-10 03:02:56,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504958792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:02:56,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274696677] [2024-11-10 03:02:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:56,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:02:56,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:02:56,334 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) [2024-11-10 03:02:56,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 03:02:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:57,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 03:02:57,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:02:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:57,364 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 03:02:57,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274696677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:02:57,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 03:02:57,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-10 03:02:57,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632901626] [2024-11-10 03:02:57,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:02:57,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 03:02:57,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:57,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 03:02:57,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-10 03:02:57,367 INFO L87 Difference]: Start difference. First operand 700 states and 1033 transitions. Second operand has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:57,890 INFO L93 Difference]: Finished difference Result 1310 states and 1939 transitions. [2024-11-10 03:02:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 03:02:57,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2024-11-10 03:02:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:57,894 INFO L225 Difference]: With dead ends: 1310 [2024-11-10 03:02:57,894 INFO L226 Difference]: Without dead ends: 700 [2024-11-10 03:02:57,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-10 03:02:57,897 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 666 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:57,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 942 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 03:02:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2024-11-10 03:02:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2024-11-10 03:02:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 699 states have (on average 1.4763948497854078) internal successors, (1032), 699 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1032 transitions. [2024-11-10 03:02:57,913 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1032 transitions. Word has length 218 [2024-11-10 03:02:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:57,913 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 1032 transitions. [2024-11-10 03:02:57,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1032 transitions. [2024-11-10 03:02:57,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-10 03:02:57,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:57,916 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:57,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 03:02:58,121 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,SelfDestructingSolverStorable7 [2024-11-10 03:02:58,122 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:58,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:58,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1611650707, now seen corresponding path program 1 times [2024-11-10 03:02:58,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:58,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507638079] [2024-11-10 03:02:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:58,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:59,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:59,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507638079] [2024-11-10 03:02:59,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507638079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:02:59,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:02:59,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 03:02:59,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77735253] [2024-11-10 03:02:59,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:02:59,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 03:02:59,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:59,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 03:02:59,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 03:02:59,164 INFO L87 Difference]: Start difference. First operand 700 states and 1032 transitions. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:59,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:59,774 INFO L93 Difference]: Finished difference Result 1062 states and 1567 transitions. [2024-11-10 03:02:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 03:02:59,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2024-11-10 03:02:59,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:59,779 INFO L225 Difference]: With dead ends: 1062 [2024-11-10 03:02:59,779 INFO L226 Difference]: Without dead ends: 702 [2024-11-10 03:02:59,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:02:59,782 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 1236 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:59,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 953 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 03:02:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-11-10 03:02:59,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 701. [2024-11-10 03:02:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.4757142857142858) internal successors, (1033), 700 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1033 transitions. [2024-11-10 03:02:59,797 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1033 transitions. Word has length 219 [2024-11-10 03:02:59,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:59,798 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1033 transitions. [2024-11-10 03:02:59,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:02:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1033 transitions. [2024-11-10 03:02:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-10 03:02:59,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:59,801 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:59,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 03:02:59,801 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:59,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:59,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1737377691, now seen corresponding path program 1 times [2024-11-10 03:02:59,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:59,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510430225] [2024-11-10 03:02:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:59,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:03:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:01,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:03:01,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510430225] [2024-11-10 03:03:01,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510430225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:03:01,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:03:01,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 03:03:01,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601877188] [2024-11-10 03:03:01,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:03:01,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 03:03:01,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:03:01,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 03:03:01,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-10 03:03:01,035 INFO L87 Difference]: Start difference. First operand 701 states and 1033 transitions. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:02,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:03:02,268 INFO L93 Difference]: Finished difference Result 1408 states and 2078 transitions. [2024-11-10 03:03:02,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 03:03:02,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2024-11-10 03:03:02,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:03:02,273 INFO L225 Difference]: With dead ends: 1408 [2024-11-10 03:03:02,273 INFO L226 Difference]: Without dead ends: 1048 [2024-11-10 03:03:02,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-10 03:03:02,275 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 812 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:03:02,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 2833 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-10 03:03:02,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2024-11-10 03:03:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 705. [2024-11-10 03:03:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 704 states have (on average 1.4730113636363635) internal successors, (1037), 704 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:02,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1037 transitions. [2024-11-10 03:03:02,291 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1037 transitions. Word has length 220 [2024-11-10 03:03:02,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:03:02,292 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 1037 transitions. [2024-11-10 03:03:02,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:02,292 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1037 transitions. [2024-11-10 03:03:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-10 03:03:02,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:03:02,295 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:03:02,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 03:03:02,296 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:03:02,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:03:02,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2137978962, now seen corresponding path program 1 times [2024-11-10 03:03:02,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:03:02,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250867660] [2024-11-10 03:03:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:02,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:03:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 03:03:03,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:03:03,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250867660] [2024-11-10 03:03:03,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250867660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:03:03,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416979699] [2024-11-10 03:03:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:03,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:03:03,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:03:03,792 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) [2024-11-10 03:03:03,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 03:03:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:04,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-10 03:03:04,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:03:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:05,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:03:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:06,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416979699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:03:06,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:03:06,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 10] total 23 [2024-11-10 03:03:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142181321] [2024-11-10 03:03:06,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:03:06,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 03:03:06,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:03:06,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 03:03:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2024-11-10 03:03:06,319 INFO L87 Difference]: Start difference. First operand 705 states and 1037 transitions. Second operand has 23 states, 23 states have (on average 27.695652173913043) internal successors, (637), 23 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:03:07,781 INFO L93 Difference]: Finished difference Result 1357 states and 1993 transitions. [2024-11-10 03:03:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 03:03:07,783 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 27.695652173913043) internal successors, (637), 23 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-10 03:03:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:03:07,787 INFO L225 Difference]: With dead ends: 1357 [2024-11-10 03:03:07,788 INFO L226 Difference]: Without dead ends: 729 [2024-11-10 03:03:07,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 03:03:07,790 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 1824 mSDsluCounter, 3225 mSDsCounter, 0 mSdLazyCounter, 2622 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-10 03:03:07,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 3536 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2622 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-10 03:03:07,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-10 03:03:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 714. [2024-11-10 03:03:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 713 states have (on average 1.4712482468443198) internal successors, (1049), 713 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1049 transitions. [2024-11-10 03:03:07,804 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1049 transitions. Word has length 221 [2024-11-10 03:03:07,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:03:07,806 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 1049 transitions. [2024-11-10 03:03:07,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.695652173913043) internal successors, (637), 23 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:07,806 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1049 transitions. [2024-11-10 03:03:07,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-10 03:03:07,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:03:07,809 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:03:07,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 03:03:08,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:03:08,013 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:03:08,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:03:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2098790795, now seen corresponding path program 1 times [2024-11-10 03:03:08,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:03:08,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779960869] [2024-11-10 03:03:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:08,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:03:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:09,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:03:09,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779960869] [2024-11-10 03:03:09,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779960869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:03:09,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31313060] [2024-11-10 03:03:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:09,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:03:09,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:03:09,007 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) [2024-11-10 03:03:09,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 03:03:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:09,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 03:03:09,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:03:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:10,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:03:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:11,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31313060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:03:11,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:03:11,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-10 03:03:11,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083387850] [2024-11-10 03:03:11,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:03:11,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 03:03:11,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:03:11,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 03:03:11,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-10 03:03:11,015 INFO L87 Difference]: Start difference. First operand 714 states and 1049 transitions. Second operand has 19 states, 19 states have (on average 31.842105263157894) internal successors, (605), 19 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:12,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:03:12,311 INFO L93 Difference]: Finished difference Result 1440 states and 2109 transitions. [2024-11-10 03:03:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 03:03:12,312 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 31.842105263157894) internal successors, (605), 19 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2024-11-10 03:03:12,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:03:12,315 INFO L225 Difference]: With dead ends: 1440 [2024-11-10 03:03:12,315 INFO L226 Difference]: Without dead ends: 772 [2024-11-10 03:03:12,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2024-11-10 03:03:12,317 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 4193 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 2676 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4193 SdHoareTripleChecker+Valid, 3752 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-10 03:03:12,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4193 Valid, 3752 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2676 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-10 03:03:12,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-11-10 03:03:12,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 728. [2024-11-10 03:03:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 727 states have (on average 1.4649243466299862) internal successors, (1065), 727 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1065 transitions. [2024-11-10 03:03:12,334 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1065 transitions. Word has length 223 [2024-11-10 03:03:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:03:12,335 INFO L471 AbstractCegarLoop]: Abstraction has 728 states and 1065 transitions. [2024-11-10 03:03:12,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 31.842105263157894) internal successors, (605), 19 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:12,336 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1065 transitions. [2024-11-10 03:03:12,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-10 03:03:12,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:03:12,341 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:03:12,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 03:03:12,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:03:12,546 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:03:12,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:03:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash -913294969, now seen corresponding path program 1 times [2024-11-10 03:03:12,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:03:12,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794116678] [2024-11-10 03:03:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:12,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:03:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 185 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:14,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:03:14,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794116678] [2024-11-10 03:03:14,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794116678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:03:14,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016591730] [2024-11-10 03:03:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:14,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:03:14,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:03:14,363 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) [2024-11-10 03:03:14,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 03:03:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:15,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 03:03:15,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:03:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 185 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:15,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:03:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 185 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:16,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016591730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:03:16,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:03:16,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-10 03:03:16,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17460945] [2024-11-10 03:03:16,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:03:16,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 03:03:16,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:03:16,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 03:03:16,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-10 03:03:16,798 INFO L87 Difference]: Start difference. First operand 728 states and 1065 transitions. Second operand has 15 states, 15 states have (on average 40.0) internal successors, (600), 15 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:17,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:03:17,550 INFO L93 Difference]: Finished difference Result 1143 states and 1671 transitions. [2024-11-10 03:03:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 03:03:17,551 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 40.0) internal successors, (600), 15 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2024-11-10 03:03:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:03:17,553 INFO L225 Difference]: With dead ends: 1143 [2024-11-10 03:03:17,553 INFO L226 Difference]: Without dead ends: 773 [2024-11-10 03:03:17,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2024-11-10 03:03:17,555 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 2403 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-10 03:03:17,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2403 Valid, 2780 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-10 03:03:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-11-10 03:03:17,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 771. [2024-11-10 03:03:17,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 1.4584415584415584) internal successors, (1123), 770 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1123 transitions. [2024-11-10 03:03:17,570 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1123 transitions. Word has length 383 [2024-11-10 03:03:17,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:03:17,571 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 1123 transitions. [2024-11-10 03:03:17,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 40.0) internal successors, (600), 15 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1123 transitions. [2024-11-10 03:03:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-10 03:03:17,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:03:17,578 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:03:17,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 03:03:17,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-10 03:03:17,779 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:03:17,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:03:17,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1451486059, now seen corresponding path program 1 times [2024-11-10 03:03:17,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:03:17,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463184580] [2024-11-10 03:03:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:17,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:03:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 185 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:19,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:03:19,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463184580] [2024-11-10 03:03:19,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463184580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:03:19,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409486453] [2024-11-10 03:03:19,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:19,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:03:19,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:03:19,562 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) [2024-11-10 03:03:19,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 03:03:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:20,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 2482 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-10 03:03:20,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:03:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 12 proven. 196 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 03:03:22,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:03:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-10 03:03:23,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409486453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:03:23,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:03:23,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 10] total 25 [2024-11-10 03:03:23,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908438643] [2024-11-10 03:03:23,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:03:23,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 03:03:23,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:03:23,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 03:03:23,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-11-10 03:03:23,906 INFO L87 Difference]: Start difference. First operand 771 states and 1123 transitions. Second operand has 25 states, 25 states have (on average 40.52) internal successors, (1013), 25 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:25,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:03:25,935 INFO L93 Difference]: Finished difference Result 1486 states and 2165 transitions. [2024-11-10 03:03:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-10 03:03:25,936 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 40.52) internal successors, (1013), 25 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 384 [2024-11-10 03:03:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:03:25,938 INFO L225 Difference]: With dead ends: 1486 [2024-11-10 03:03:25,938 INFO L226 Difference]: Without dead ends: 793 [2024-11-10 03:03:25,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=511, Invalid=2245, Unknown=0, NotChecked=0, Total=2756 [2024-11-10 03:03:25,941 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 3736 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 3537 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3736 SdHoareTripleChecker+Valid, 3351 SdHoareTripleChecker+Invalid, 3547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-10 03:03:25,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3736 Valid, 3351 Invalid, 3547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3537 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-10 03:03:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-11-10 03:03:25,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 772. [2024-11-10 03:03:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 1.457846952010376) internal successors, (1124), 771 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1124 transitions. [2024-11-10 03:03:25,956 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1124 transitions. Word has length 384 [2024-11-10 03:03:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:03:25,956 INFO L471 AbstractCegarLoop]: Abstraction has 772 states and 1124 transitions. [2024-11-10 03:03:25,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 40.52) internal successors, (1013), 25 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1124 transitions. [2024-11-10 03:03:25,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-10 03:03:25,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:03:25,963 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:03:25,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 03:03:26,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:03:26,164 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:03:26,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:03:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1226292082, now seen corresponding path program 1 times [2024-11-10 03:03:26,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:03:26,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93112924] [2024-11-10 03:03:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:26,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:03:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-10 03:03:28,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:03:28,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93112924] [2024-11-10 03:03:28,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93112924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:03:28,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718311055] [2024-11-10 03:03:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:28,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:03:28,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:03:28,879 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) [2024-11-10 03:03:28,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 03:03:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:30,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 03:03:30,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:03:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:31,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 03:03:31,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718311055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:03:31,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 03:03:31,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-10 03:03:31,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903023672] [2024-11-10 03:03:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:03:31,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 03:03:31,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:03:31,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 03:03:31,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-10 03:03:31,042 INFO L87 Difference]: Start difference. First operand 772 states and 1124 transitions. Second operand has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 6 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:03:31,522 INFO L93 Difference]: Finished difference Result 1485 states and 2169 transitions. [2024-11-10 03:03:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 03:03:31,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 6 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2024-11-10 03:03:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:03:31,526 INFO L225 Difference]: With dead ends: 1485 [2024-11-10 03:03:31,527 INFO L226 Difference]: Without dead ends: 1115 [2024-11-10 03:03:31,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-10 03:03:31,530 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 966 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 03:03:31,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 1292 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 03:03:31,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2024-11-10 03:03:31,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1113. [2024-11-10 03:03:31,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 1.4577338129496402) internal successors, (1621), 1112 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:31,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1621 transitions. [2024-11-10 03:03:31,554 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1621 transitions. Word has length 385 [2024-11-10 03:03:31,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:03:31,555 INFO L471 AbstractCegarLoop]: Abstraction has 1113 states and 1621 transitions. [2024-11-10 03:03:31,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 6 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:31,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1621 transitions. [2024-11-10 03:03:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2024-11-10 03:03:31,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:03:31,558 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:03:31,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 03:03:31,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:03:31,760 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:03:31,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:03:31,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1854835667, now seen corresponding path program 1 times [2024-11-10 03:03:31,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:03:31,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329373831] [2024-11-10 03:03:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:31,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:03:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 81 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:33,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:03:33,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329373831] [2024-11-10 03:03:33,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329373831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:03:33,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764914532] [2024-11-10 03:03:33,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:33,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:03:33,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:03:33,536 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) [2024-11-10 03:03:33,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 03:03:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:34,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-10 03:03:34,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:03:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-10 03:03:35,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 03:03:35,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764914532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:03:35,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 03:03:35,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-10 03:03:35,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022495949] [2024-11-10 03:03:35,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:03:35,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 03:03:35,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:03:35,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 03:03:35,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-10 03:03:35,893 INFO L87 Difference]: Start difference. First operand 1113 states and 1621 transitions. Second operand has 8 states, 8 states have (on average 44.875) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:36,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:03:36,578 INFO L93 Difference]: Finished difference Result 1933 states and 2817 transitions. [2024-11-10 03:03:36,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 03:03:36,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 44.875) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 386 [2024-11-10 03:03:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:03:36,582 INFO L225 Difference]: With dead ends: 1933 [2024-11-10 03:03:36,582 INFO L226 Difference]: Without dead ends: 1268 [2024-11-10 03:03:36,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-10 03:03:36,584 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 431 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 03:03:36,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1955 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 03:03:36,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2024-11-10 03:03:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1132. [2024-11-10 03:03:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 1131 states have (on average 1.453580901856764) internal successors, (1644), 1131 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1644 transitions. [2024-11-10 03:03:36,603 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1644 transitions. Word has length 386 [2024-11-10 03:03:36,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:03:36,604 INFO L471 AbstractCegarLoop]: Abstraction has 1132 states and 1644 transitions. [2024-11-10 03:03:36,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 44.875) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:36,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1644 transitions. [2024-11-10 03:03:36,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2024-11-10 03:03:36,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:03:36,607 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:03:36,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 03:03:36,808 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,SelfDestructingSolverStorable15 [2024-11-10 03:03:36,808 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:03:36,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:03:36,809 INFO L85 PathProgramCache]: Analyzing trace with hash -378681857, now seen corresponding path program 1 times [2024-11-10 03:03:36,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:03:36,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354277977] [2024-11-10 03:03:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:36,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:03:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 03:03:39,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:03:39,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354277977] [2024-11-10 03:03:39,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354277977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:03:39,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:03:39,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 03:03:39,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728501792] [2024-11-10 03:03:39,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:03:39,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 03:03:39,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:03:39,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 03:03:39,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-10 03:03:39,355 INFO L87 Difference]: Start difference. First operand 1132 states and 1644 transitions. Second operand has 8 states, 8 states have (on average 45.875) internal successors, (367), 8 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:40,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:03:40,278 INFO L93 Difference]: Finished difference Result 2322 states and 3370 transitions. [2024-11-10 03:03:40,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 03:03:40,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.875) internal successors, (367), 8 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 386 [2024-11-10 03:03:40,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:03:40,283 INFO L225 Difference]: With dead ends: 2322 [2024-11-10 03:03:40,283 INFO L226 Difference]: Without dead ends: 1546 [2024-11-10 03:03:40,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-10 03:03:40,285 INFO L432 NwaCegarLoop]: 606 mSDtfsCounter, 1065 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-10 03:03:40,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 2890 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-10 03:03:40,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2024-11-10 03:03:40,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1132. [2024-11-10 03:03:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 1131 states have (on average 1.453580901856764) internal successors, (1644), 1131 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1644 transitions. [2024-11-10 03:03:40,310 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1644 transitions. Word has length 386 [2024-11-10 03:03:40,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:03:40,311 INFO L471 AbstractCegarLoop]: Abstraction has 1132 states and 1644 transitions. [2024-11-10 03:03:40,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.875) internal successors, (367), 8 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1644 transitions. [2024-11-10 03:03:40,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2024-11-10 03:03:40,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:03:40,317 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:03:40,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 03:03:40,320 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:03:40,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:03:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash 646997850, now seen corresponding path program 1 times [2024-11-10 03:03:40,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:03:40,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917112695] [2024-11-10 03:03:40,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:40,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:03:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 81 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:03:42,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:03:42,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917112695] [2024-11-10 03:03:42,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917112695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:03:42,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257127066] [2024-11-10 03:03:42,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:03:42,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:03:42,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:03:42,451 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) [2024-11-10 03:03:42,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 03:03:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:03:43,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-10 03:03:43,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:03:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-10 03:03:44,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:03:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 60 proven. 12 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-10 03:03:44,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257127066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:03:44,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:03:44,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 25 [2024-11-10 03:03:44,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590016595] [2024-11-10 03:03:44,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:03:44,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 03:03:44,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:03:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 03:03:44,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2024-11-10 03:03:44,858 INFO L87 Difference]: Start difference. First operand 1132 states and 1644 transitions. Second operand has 25 states, 25 states have (on average 33.76) internal successors, (844), 25 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:47,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:03:47,753 INFO L93 Difference]: Finished difference Result 3051 states and 4417 transitions. [2024-11-10 03:03:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-10 03:03:47,754 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 33.76) internal successors, (844), 25 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 387 [2024-11-10 03:03:47,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:03:47,760 INFO L225 Difference]: With dead ends: 3051 [2024-11-10 03:03:47,760 INFO L226 Difference]: Without dead ends: 1986 [2024-11-10 03:03:47,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=500, Invalid=3282, Unknown=0, NotChecked=0, Total=3782 [2024-11-10 03:03:47,763 INFO L432 NwaCegarLoop]: 610 mSDtfsCounter, 2966 mSDsluCounter, 7521 mSDsCounter, 0 mSdLazyCounter, 5779 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 8131 SdHoareTripleChecker+Invalid, 5784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-10 03:03:47,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2966 Valid, 8131 Invalid, 5784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5779 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-10 03:03:47,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2024-11-10 03:03:47,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1627. [2024-11-10 03:03:47,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1626 states have (on average 1.4452644526445264) internal successors, (2350), 1626 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:47,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2350 transitions. [2024-11-10 03:03:47,795 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2350 transitions. Word has length 387 [2024-11-10 03:03:47,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:03:47,796 INFO L471 AbstractCegarLoop]: Abstraction has 1627 states and 2350 transitions. [2024-11-10 03:03:47,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 33.76) internal successors, (844), 25 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 03:03:47,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2350 transitions. [2024-11-10 03:03:47,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-10 03:03:47,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:03:47,801 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:03:47,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0