./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label45.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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/eca-rers2012/Problem14_label45.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d284e8efd4e45ee6ae258c3b376fc8f91ce52940016142658227b0ca393b3ff2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 22:19:43,942 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 22:19:44,011 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 22:19:44,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 22:19:44,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 22:19:44,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 22:19:44,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 22:19:44,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 22:19:44,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 22:19:44,048 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 22:19:44,048 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 22:19:44,048 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 22:19:44,049 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 22:19:44,049 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 22:19:44,050 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 22:19:44,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 22:19:44,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 22:19:44,051 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 22:19:44,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 22:19:44,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 22:19:44,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 22:19:44,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 22:19:44,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 22:19:44,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 22:19:44,053 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 22:19:44,053 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 22:19:44,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 22:19:44,054 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 22:19:44,054 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 22:19:44,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 22:19:44,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 22:19:44,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 22:19:44,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:19:44,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 22:19:44,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 22:19:44,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 22:19:44,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 22:19:44,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 22:19:44,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 22:19:44,058 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 22:19:44,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 22:19:44,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 22:19:44,060 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d284e8efd4e45ee6ae258c3b376fc8f91ce52940016142658227b0ca393b3ff2 [2024-11-21 22:19:44,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 22:19:44,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 22:19:44,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 22:19:44,349 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 22:19:44,350 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 22:19:44,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label45.c [2024-11-21 22:19:45,725 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 22:19:46,026 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 22:19:46,026 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label45.c [2024-11-21 22:19:46,045 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066b707c4/cfbbe0b9fab044a98e73853744e79e23/FLAG3f9832f77 [2024-11-21 22:19:46,064 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066b707c4/cfbbe0b9fab044a98e73853744e79e23 [2024-11-21 22:19:46,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 22:19:46,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 22:19:46,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 22:19:46,073 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 22:19:46,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 22:19:46,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522e74d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46, skipping insertion in model container [2024-11-21 22:19:46,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 22:19:46,346 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/eca-rers2012/Problem14_label45.c[3828,3841] [2024-11-21 22:19:46,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:19:46,520 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 22:19:46,541 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/eca-rers2012/Problem14_label45.c[3828,3841] [2024-11-21 22:19:46,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:19:46,725 INFO L204 MainTranslator]: Completed translation [2024-11-21 22:19:46,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46 WrapperNode [2024-11-21 22:19:46,725 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 22:19:46,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 22:19:46,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 22:19:46,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 22:19:46,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,753 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,810 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 859 [2024-11-21 22:19:46,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 22:19:46,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 22:19:46,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 22:19:46,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 22:19:46,826 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,834 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,879 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]. [2024-11-21 22:19:46,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,914 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,948 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 22:19:46,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 22:19:46,960 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 22:19:46,960 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 22:19:46,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (1/1) ... [2024-11-21 22:19:46,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:19:46,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:19:46,992 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) [2024-11-21 22:19:46,996 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 [2024-11-21 22:19:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 22:19:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 22:19:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 22:19:47,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 22:19:47,111 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 22:19:47,113 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 22:19:48,201 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-11-21 22:19:48,201 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 22:19:48,220 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 22:19:48,220 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 22:19:48,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:19:48 BoogieIcfgContainer [2024-11-21 22:19:48,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 22:19:48,223 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 22:19:48,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 22:19:48,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 22:19:48,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:19:46" (1/3) ... [2024-11-21 22:19:48,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d96e252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:19:48, skipping insertion in model container [2024-11-21 22:19:48,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:46" (2/3) ... [2024-11-21 22:19:48,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d96e252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:19:48, skipping insertion in model container [2024-11-21 22:19:48,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:19:48" (3/3) ... [2024-11-21 22:19:48,229 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label45.c [2024-11-21 22:19:48,244 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 22:19:48,244 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 22:19:48,307 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 22:19:48,315 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;@258b6e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 22:19:48,316 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 22:19:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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) [2024-11-21 22:19:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-21 22:19:48,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:19:48,330 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] [2024-11-21 22:19:48,331 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:19:48,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:19:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1318097310, now seen corresponding path program 1 times [2024-11-21 22:19:48,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:19:48,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002805106] [2024-11-21 22:19:48,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:48,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:19:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:19:48,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:19:48,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002805106] [2024-11-21 22:19:48,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002805106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:19:48,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:19:48,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:19:48,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334887667] [2024-11-21 22:19:48,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:19:48,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:19:48,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:19:48,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:19:48,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:19:48,707 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2024-11-21 22:19:49,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:19:49,673 INFO L93 Difference]: Finished difference Result 685 states and 1216 transitions. [2024-11-21 22:19:49,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:19:49,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 36 [2024-11-21 22:19:49,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:19:49,691 INFO L225 Difference]: With dead ends: 685 [2024-11-21 22:19:49,691 INFO L226 Difference]: Without dead ends: 360 [2024-11-21 22:19:49,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:19:49,702 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 182 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-21 22:19:49,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 139 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-21 22:19:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-21 22:19:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-11-21 22:19:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4206128133704736) internal successors, (510), 359 states have internal predecessors, (510), 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) [2024-11-21 22:19:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 510 transitions. [2024-11-21 22:19:49,755 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 510 transitions. Word has length 36 [2024-11-21 22:19:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:19:49,756 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 510 transitions. [2024-11-21 22:19:49,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2024-11-21 22:19:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 510 transitions. [2024-11-21 22:19:49,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-21 22:19:49,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:19:49,762 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, 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] [2024-11-21 22:19:49,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 22:19:49,763 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:19:49,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:19:49,764 INFO L85 PathProgramCache]: Analyzing trace with hash 598559029, now seen corresponding path program 1 times [2024-11-21 22:19:49,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:19:49,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748932014] [2024-11-21 22:19:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:49,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:19:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:19:50,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:19:50,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748932014] [2024-11-21 22:19:50,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748932014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:19:50,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:19:50,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:19:50,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47975091] [2024-11-21 22:19:50,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:19:50,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:19:50,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:19:50,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:19:50,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:19:50,292 INFO L87 Difference]: Start difference. First operand 360 states and 510 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-11-21 22:19:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:19:51,213 INFO L93 Difference]: Finished difference Result 1074 states and 1446 transitions. [2024-11-21 22:19:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:19:51,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2024-11-21 22:19:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:19:51,217 INFO L225 Difference]: With dead ends: 1074 [2024-11-21 22:19:51,217 INFO L226 Difference]: Without dead ends: 716 [2024-11-21 22:19:51,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:19:51,219 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 419 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-21 22:19:51,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 121 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-21 22:19:51,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-21 22:19:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2024-11-21 22:19:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.2615384615384615) internal successors, (902), 715 states have internal predecessors, (902), 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) [2024-11-21 22:19:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 902 transitions. [2024-11-21 22:19:51,248 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 902 transitions. Word has length 115 [2024-11-21 22:19:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:19:51,249 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 902 transitions. [2024-11-21 22:19:51,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-11-21 22:19:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 902 transitions. [2024-11-21 22:19:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-21 22:19:51,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:19:51,253 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, 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] [2024-11-21 22:19:51,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 22:19:51,253 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:19:51,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:19:51,254 INFO L85 PathProgramCache]: Analyzing trace with hash 962256372, now seen corresponding path program 1 times [2024-11-21 22:19:51,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:19:51,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249227581] [2024-11-21 22:19:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:51,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:19:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-21 22:19:51,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:19:51,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249227581] [2024-11-21 22:19:51,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249227581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:19:51,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527703708] [2024-11-21 22:19:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:51,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:19:51,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:19:51,547 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) [2024-11-21 22:19:51,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 22:19:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:51,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:19:51,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:19:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-21 22:19:51,856 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:19:51,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527703708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:19:51,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:19:51,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-21 22:19:51,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198987224] [2024-11-21 22:19:51,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:19:51,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:19:51,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:19:51,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:19:51,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:19:51,859 INFO L87 Difference]: Start difference. First operand 716 states and 902 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2024-11-21 22:19:52,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:19:52,494 INFO L93 Difference]: Finished difference Result 1252 states and 1612 transitions. [2024-11-21 22:19:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:19:52,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 141 [2024-11-21 22:19:52,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:19:52,503 INFO L225 Difference]: With dead ends: 1252 [2024-11-21 22:19:52,504 INFO L226 Difference]: Without dead ends: 1250 [2024-11-21 22:19:52,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:19:52,505 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 91 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:19:52,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 36 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:19:52,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2024-11-21 22:19:52,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 894. [2024-11-21 22:19:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.3370660694288914) internal successors, (1194), 893 states have internal predecessors, (1194), 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) [2024-11-21 22:19:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1194 transitions. [2024-11-21 22:19:52,539 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1194 transitions. Word has length 141 [2024-11-21 22:19:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:19:52,542 INFO L471 AbstractCegarLoop]: Abstraction has 894 states and 1194 transitions. [2024-11-21 22:19:52,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2024-11-21 22:19:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1194 transitions. [2024-11-21 22:19:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-21 22:19:52,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:19:52,554 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:19:52,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 22:19:52,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:19:52,755 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:19:52,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:19:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1175834839, now seen corresponding path program 1 times [2024-11-21 22:19:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:19:52,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908043850] [2024-11-21 22:19:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:19:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-21 22:19:53,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:19:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908043850] [2024-11-21 22:19:53,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908043850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:19:53,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:19:53,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:19:53,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893271780] [2024-11-21 22:19:53,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:19:53,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:19:53,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:19:53,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:19:53,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:19:53,016 INFO L87 Difference]: Start difference. First operand 894 states and 1194 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 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) [2024-11-21 22:19:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:19:53,769 INFO L93 Difference]: Finished difference Result 1993 states and 2629 transitions. [2024-11-21 22:19:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:19:53,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 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 195 [2024-11-21 22:19:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:19:53,774 INFO L225 Difference]: With dead ends: 1993 [2024-11-21 22:19:53,774 INFO L226 Difference]: Without dead ends: 1072 [2024-11-21 22:19:53,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:19:53,776 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 116 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:19:53,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 119 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:19:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2024-11-21 22:19:53,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2024-11-21 22:19:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.1802054154995332) internal successors, (1264), 1071 states have internal predecessors, (1264), 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) [2024-11-21 22:19:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1264 transitions. [2024-11-21 22:19:53,800 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1264 transitions. Word has length 195 [2024-11-21 22:19:53,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:19:53,801 INFO L471 AbstractCegarLoop]: Abstraction has 1072 states and 1264 transitions. [2024-11-21 22:19:53,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 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) [2024-11-21 22:19:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1264 transitions. [2024-11-21 22:19:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-21 22:19:53,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:19:53,807 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:19:53,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 22:19:53,807 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:19:53,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:19:53,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1612317507, now seen corresponding path program 1 times [2024-11-21 22:19:53,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:19:53,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738316554] [2024-11-21 22:19:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:53,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:19:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 67 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:19:54,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:19:54,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738316554] [2024-11-21 22:19:54,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738316554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:19:54,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693378436] [2024-11-21 22:19:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:54,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:19:54,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:19:54,146 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) [2024-11-21 22:19:54,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 22:19:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:54,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:19:54,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:19:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-21 22:19:54,309 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:19:54,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693378436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:19:54,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:19:54,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-21 22:19:54,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074037538] [2024-11-21 22:19:54,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:19:54,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:19:54,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:19:54,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:19:54,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:19:54,311 INFO L87 Difference]: Start difference. First operand 1072 states and 1264 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-11-21 22:19:54,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:19:54,875 INFO L93 Difference]: Finished difference Result 2498 states and 3033 transitions. [2024-11-21 22:19:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:19:54,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 207 [2024-11-21 22:19:54,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:19:54,881 INFO L225 Difference]: With dead ends: 2498 [2024-11-21 22:19:54,881 INFO L226 Difference]: Without dead ends: 1428 [2024-11-21 22:19:54,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:19:54,883 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 147 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:19:54,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 85 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 22:19:54,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2024-11-21 22:19:54,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1072. [2024-11-21 22:19:54,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.1802054154995332) internal successors, (1264), 1071 states have internal predecessors, (1264), 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) [2024-11-21 22:19:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1264 transitions. [2024-11-21 22:19:54,905 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1264 transitions. Word has length 207 [2024-11-21 22:19:54,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:19:54,905 INFO L471 AbstractCegarLoop]: Abstraction has 1072 states and 1264 transitions. [2024-11-21 22:19:54,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-11-21 22:19:54,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1264 transitions. [2024-11-21 22:19:54,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-21 22:19:54,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:19:54,909 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:19:54,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 22:19:55,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:19:55,111 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:19:55,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:19:55,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1756406788, now seen corresponding path program 1 times [2024-11-21 22:19:55,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:19:55,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975641439] [2024-11-21 22:19:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:19:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:19:55,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:19:55,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975641439] [2024-11-21 22:19:55,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975641439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:19:55,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:19:55,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:19:55,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252422350] [2024-11-21 22:19:55,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:19:55,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:19:55,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:19:55,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:19:55,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:19:55,375 INFO L87 Difference]: Start difference. First operand 1072 states and 1264 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2024-11-21 22:19:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:19:55,888 INFO L93 Difference]: Finished difference Result 2676 states and 3213 transitions. [2024-11-21 22:19:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:19:55,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 210 [2024-11-21 22:19:55,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:19:55,894 INFO L225 Difference]: With dead ends: 2676 [2024-11-21 22:19:55,895 INFO L226 Difference]: Without dead ends: 1606 [2024-11-21 22:19:55,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:19:55,899 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:19:55,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 57 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 22:19:55,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2024-11-21 22:19:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2024-11-21 22:19:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.1576323987538941) internal successors, (1858), 1605 states have internal predecessors, (1858), 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) [2024-11-21 22:19:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1858 transitions. [2024-11-21 22:19:55,924 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1858 transitions. Word has length 210 [2024-11-21 22:19:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:19:55,925 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 1858 transitions. [2024-11-21 22:19:55,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2024-11-21 22:19:55,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1858 transitions. [2024-11-21 22:19:55,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-21 22:19:55,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:19:55,929 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:19:55,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 22:19:55,931 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:19:55,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:19:55,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1957778096, now seen corresponding path program 1 times [2024-11-21 22:19:55,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:19:55,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937933484] [2024-11-21 22:19:55,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:55,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:19:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 156 proven. 130 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-21 22:19:56,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:19:56,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937933484] [2024-11-21 22:19:56,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937933484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:19:56,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082312499] [2024-11-21 22:19:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:56,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:19:56,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:19:56,379 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) [2024-11-21 22:19:56,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 22:19:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:56,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:19:56,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:19:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2024-11-21 22:19:56,857 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:19:56,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082312499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:19:56,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:19:56,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-21 22:19:56,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789942977] [2024-11-21 22:19:56,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:19:56,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:19:56,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:19:56,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:19:56,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:19:56,859 INFO L87 Difference]: Start difference. First operand 1606 states and 1858 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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) [2024-11-21 22:19:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:19:57,379 INFO L93 Difference]: Finished difference Result 3566 states and 4204 transitions. [2024-11-21 22:19:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:19:57,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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 329 [2024-11-21 22:19:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:19:57,386 INFO L225 Difference]: With dead ends: 3566 [2024-11-21 22:19:57,386 INFO L226 Difference]: Without dead ends: 2140 [2024-11-21 22:19:57,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:19:57,389 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:19:57,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 47 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 22:19:57,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2024-11-21 22:19:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1962. [2024-11-21 22:19:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.1330953595104538) internal successors, (2222), 1961 states have internal predecessors, (2222), 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) [2024-11-21 22:19:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2222 transitions. [2024-11-21 22:19:57,417 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2222 transitions. Word has length 329 [2024-11-21 22:19:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:19:57,418 INFO L471 AbstractCegarLoop]: Abstraction has 1962 states and 2222 transitions. [2024-11-21 22:19:57,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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) [2024-11-21 22:19:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2222 transitions. [2024-11-21 22:19:57,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-21 22:19:57,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:19:57,423 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:19:57,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-21 22:19:57,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:19:57,624 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:19:57,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:19:57,625 INFO L85 PathProgramCache]: Analyzing trace with hash 918840898, now seen corresponding path program 1 times [2024-11-21 22:19:57,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:19:57,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862814697] [2024-11-21 22:19:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:57,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:19:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-21 22:19:57,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:19:57,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862814697] [2024-11-21 22:19:57,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862814697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:19:57,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:19:57,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:19:57,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110128388] [2024-11-21 22:19:57,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:19:57,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:19:57,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:19:57,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:19:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:19:57,997 INFO L87 Difference]: Start difference. First operand 1962 states and 2222 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 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) [2024-11-21 22:19:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:19:58,619 INFO L93 Difference]: Finished difference Result 3951 states and 4494 transitions. [2024-11-21 22:19:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:19:58,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 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 406 [2024-11-21 22:19:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:19:58,626 INFO L225 Difference]: With dead ends: 3951 [2024-11-21 22:19:58,626 INFO L226 Difference]: Without dead ends: 2140 [2024-11-21 22:19:58,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:19:58,629 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 141 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:19:58,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 17 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:19:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2024-11-21 22:19:58,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1962. [2024-11-21 22:19:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.084140744518103) internal successors, (2126), 1961 states have internal predecessors, (2126), 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) [2024-11-21 22:19:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2126 transitions. [2024-11-21 22:19:58,675 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2126 transitions. Word has length 406 [2024-11-21 22:19:58,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:19:58,677 INFO L471 AbstractCegarLoop]: Abstraction has 1962 states and 2126 transitions. [2024-11-21 22:19:58,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 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) [2024-11-21 22:19:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2126 transitions. [2024-11-21 22:19:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-21 22:19:58,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:19:58,683 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:19:58,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 22:19:58,684 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:19:58,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:19:58,684 INFO L85 PathProgramCache]: Analyzing trace with hash 200589399, now seen corresponding path program 1 times [2024-11-21 22:19:58,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:19:58,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446375393] [2024-11-21 22:19:58,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:58,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:19:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-11-21 22:19:59,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:19:59,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446375393] [2024-11-21 22:19:59,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446375393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:19:59,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:19:59,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:19:59,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258290620] [2024-11-21 22:19:59,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:19:59,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:19:59,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:19:59,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:19:59,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:19:59,066 INFO L87 Difference]: Start difference. First operand 1962 states and 2126 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2024-11-21 22:19:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:19:59,599 INFO L93 Difference]: Finished difference Result 4456 states and 4894 transitions. [2024-11-21 22:19:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:19:59,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 429 [2024-11-21 22:19:59,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:19:59,608 INFO L225 Difference]: With dead ends: 4456 [2024-11-21 22:19:59,608 INFO L226 Difference]: Without dead ends: 2674 [2024-11-21 22:19:59,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:19:59,613 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:19:59,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 202 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 22:19:59,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2024-11-21 22:19:59,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2024-11-21 22:19:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.08791619902731) internal successors, (2908), 2673 states have internal predecessors, (2908), 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) [2024-11-21 22:19:59,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2908 transitions. [2024-11-21 22:19:59,655 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2908 transitions. Word has length 429 [2024-11-21 22:19:59,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:19:59,656 INFO L471 AbstractCegarLoop]: Abstraction has 2674 states and 2908 transitions. [2024-11-21 22:19:59,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2024-11-21 22:19:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2908 transitions. [2024-11-21 22:19:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-11-21 22:19:59,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:19:59,665 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:19:59,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-21 22:19:59,665 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:19:59,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:19:59,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1994262682, now seen corresponding path program 1 times [2024-11-21 22:19:59,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:19:59,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247091597] [2024-11-21 22:19:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:19:59,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:19:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:19:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-11-21 22:19:59,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:19:59,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247091597] [2024-11-21 22:19:59,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247091597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:19:59,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:19:59,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:19:59,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982122418] [2024-11-21 22:19:59,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:19:59,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:19:59,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:19:59,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:19:59,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:19:59,997 INFO L87 Difference]: Start difference. First operand 2674 states and 2908 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2024-11-21 22:20:00,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:00,489 INFO L93 Difference]: Finished difference Result 6236 states and 6878 transitions. [2024-11-21 22:20:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:20:00,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 470 [2024-11-21 22:20:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:00,501 INFO L225 Difference]: With dead ends: 6236 [2024-11-21 22:20:00,501 INFO L226 Difference]: Without dead ends: 3742 [2024-11-21 22:20:00,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:20:00,505 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:00,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 50 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 22:20:00,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2024-11-21 22:20:00,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3742. [2024-11-21 22:20:00,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.083400160384924) internal successors, (4053), 3741 states have internal predecessors, (4053), 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) [2024-11-21 22:20:00,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4053 transitions. [2024-11-21 22:20:00,563 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4053 transitions. Word has length 470 [2024-11-21 22:20:00,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:00,564 INFO L471 AbstractCegarLoop]: Abstraction has 3742 states and 4053 transitions. [2024-11-21 22:20:00,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2024-11-21 22:20:00,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4053 transitions. [2024-11-21 22:20:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-11-21 22:20:00,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:00,572 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:00,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-21 22:20:00,573 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:00,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:00,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1478834189, now seen corresponding path program 1 times [2024-11-21 22:20:00,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:00,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576894460] [2024-11-21 22:20:00,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:00,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2024-11-21 22:20:01,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:01,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576894460] [2024-11-21 22:20:01,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576894460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:20:01,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:20:01,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:20:01,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484443311] [2024-11-21 22:20:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:01,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:20:01,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:01,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:20:01,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:20:01,059 INFO L87 Difference]: Start difference. First operand 3742 states and 4053 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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) [2024-11-21 22:20:01,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:01,541 INFO L93 Difference]: Finished difference Result 7304 states and 7925 transitions. [2024-11-21 22:20:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:20:01,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 506 [2024-11-21 22:20:01,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:01,553 INFO L225 Difference]: With dead ends: 7304 [2024-11-21 22:20:01,554 INFO L226 Difference]: Without dead ends: 3742 [2024-11-21 22:20:01,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:20:01,558 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 103 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:01,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 242 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 22:20:01,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2024-11-21 22:20:01,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3208. [2024-11-21 22:20:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.0792017461802308) internal successors, (3461), 3207 states have internal predecessors, (3461), 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) [2024-11-21 22:20:01,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3461 transitions. [2024-11-21 22:20:01,606 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3461 transitions. Word has length 506 [2024-11-21 22:20:01,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:01,606 INFO L471 AbstractCegarLoop]: Abstraction has 3208 states and 3461 transitions. [2024-11-21 22:20:01,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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) [2024-11-21 22:20:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3461 transitions. [2024-11-21 22:20:01,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2024-11-21 22:20:01,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:01,612 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:01,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-21 22:20:01,612 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:01,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:01,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1228194463, now seen corresponding path program 1 times [2024-11-21 22:20:01,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:01,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342625787] [2024-11-21 22:20:01,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:01,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 812 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-11-21 22:20:02,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:02,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342625787] [2024-11-21 22:20:02,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342625787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:20:02,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098013841] [2024-11-21 22:20:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:02,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:20:02,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:20:02,086 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) [2024-11-21 22:20:02,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 22:20:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:02,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:20:02,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:20:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2024-11-21 22:20:02,338 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:20:02,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098013841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:20:02,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:20:02,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 22:20:02,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463573494] [2024-11-21 22:20:02,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:02,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:20:02,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:02,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:20:02,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:20:02,340 INFO L87 Difference]: Start difference. First operand 3208 states and 3461 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2024-11-21 22:20:02,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:02,836 INFO L93 Difference]: Finished difference Result 7304 states and 7920 transitions. [2024-11-21 22:20:02,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:20:02,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 625 [2024-11-21 22:20:02,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:02,850 INFO L225 Difference]: With dead ends: 7304 [2024-11-21 22:20:02,850 INFO L226 Difference]: Without dead ends: 4276 [2024-11-21 22:20:02,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:20:02,854 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 145 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:02,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 237 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 22:20:02,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2024-11-21 22:20:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4098. [2024-11-21 22:20:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.072247986331462) internal successors, (4393), 4097 states have internal predecessors, (4393), 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) [2024-11-21 22:20:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4393 transitions. [2024-11-21 22:20:02,936 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4393 transitions. Word has length 625 [2024-11-21 22:20:02,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:02,937 INFO L471 AbstractCegarLoop]: Abstraction has 4098 states and 4393 transitions. [2024-11-21 22:20:02,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2024-11-21 22:20:02,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4393 transitions. [2024-11-21 22:20:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2024-11-21 22:20:02,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:02,947 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:02,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-21 22:20:03,147 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 [2024-11-21 22:20:03,148 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:03,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:03,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1503775658, now seen corresponding path program 1 times [2024-11-21 22:20:03,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:03,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246061697] [2024-11-21 22:20:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:03,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1664 backedges. 1206 proven. 110 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-11-21 22:20:03,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:03,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246061697] [2024-11-21 22:20:03,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246061697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:20:03,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145118156] [2024-11-21 22:20:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:03,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:20:03,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:20:03,673 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) [2024-11-21 22:20:03,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 22:20:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:03,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:20:03,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:20:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1664 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2024-11-21 22:20:03,947 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:20:03,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145118156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:20:03,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:20:03,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 22:20:03,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47014329] [2024-11-21 22:20:03,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:03,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:20:03,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:03,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:20:03,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:20:03,950 INFO L87 Difference]: Start difference. First operand 4098 states and 4393 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2024-11-21 22:20:04,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:04,354 INFO L93 Difference]: Finished difference Result 8906 states and 9550 transitions. [2024-11-21 22:20:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:20:04,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 704 [2024-11-21 22:20:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:04,365 INFO L225 Difference]: With dead ends: 8906 [2024-11-21 22:20:04,366 INFO L226 Difference]: Without dead ends: 4098 [2024-11-21 22:20:04,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:20:04,371 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 145 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:04,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 241 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-21 22:20:04,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2024-11-21 22:20:04,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3564. [2024-11-21 22:20:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3563 states have (on average 1.0637103564412012) internal successors, (3790), 3563 states have internal predecessors, (3790), 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) [2024-11-21 22:20:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 3790 transitions. [2024-11-21 22:20:04,417 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 3790 transitions. Word has length 704 [2024-11-21 22:20:04,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:04,417 INFO L471 AbstractCegarLoop]: Abstraction has 3564 states and 3790 transitions. [2024-11-21 22:20:04,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2024-11-21 22:20:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 3790 transitions. [2024-11-21 22:20:04,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2024-11-21 22:20:04,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:04,424 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:04,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-21 22:20:04,625 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 [2024-11-21 22:20:04,625 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:04,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:04,626 INFO L85 PathProgramCache]: Analyzing trace with hash -724163442, now seen corresponding path program 1 times [2024-11-21 22:20:04,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:04,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678143614] [2024-11-21 22:20:04,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:04,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 1224 proven. 155 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-11-21 22:20:05,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:05,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678143614] [2024-11-21 22:20:05,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678143614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:20:05,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717243257] [2024-11-21 22:20:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:05,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:20:05,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:20:05,117 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) [2024-11-21 22:20:05,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 22:20:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:05,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:20:05,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:20:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked. [2024-11-21 22:20:05,407 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:20:05,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717243257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:20:05,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:20:05,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 22:20:05,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057807409] [2024-11-21 22:20:05,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:05,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:20:05,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:05,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:20:05,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:20:05,410 INFO L87 Difference]: Start difference. First operand 3564 states and 3790 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2024-11-21 22:20:05,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:05,845 INFO L93 Difference]: Finished difference Result 7838 states and 8373 transitions. [2024-11-21 22:20:05,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:20:05,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 772 [2024-11-21 22:20:05,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:05,854 INFO L225 Difference]: With dead ends: 7838 [2024-11-21 22:20:05,854 INFO L226 Difference]: Without dead ends: 4454 [2024-11-21 22:20:05,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:20:05,858 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 145 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:05,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 229 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-21 22:20:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2024-11-21 22:20:05,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 4098. [2024-11-21 22:20:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.0573590432023432) internal successors, (4332), 4097 states have internal predecessors, (4332), 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) [2024-11-21 22:20:05,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4332 transitions. [2024-11-21 22:20:05,907 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4332 transitions. Word has length 772 [2024-11-21 22:20:05,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:05,908 INFO L471 AbstractCegarLoop]: Abstraction has 4098 states and 4332 transitions. [2024-11-21 22:20:05,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2024-11-21 22:20:05,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4332 transitions. [2024-11-21 22:20:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2024-11-21 22:20:05,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:05,916 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:05,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 22:20:06,123 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 [2024-11-21 22:20:06,124 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:06,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:06,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1347034201, now seen corresponding path program 1 times [2024-11-21 22:20:06,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:06,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583094518] [2024-11-21 22:20:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:06,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1822 backedges. 1319 proven. 155 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-11-21 22:20:06,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583094518] [2024-11-21 22:20:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583094518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:20:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639583622] [2024-11-21 22:20:06,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:06,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:20:06,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:20:06,652 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) [2024-11-21 22:20:06,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 22:20:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:06,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:20:06,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:20:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1822 backedges. 707 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2024-11-21 22:20:07,028 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:20:07,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639583622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:20:07,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:20:07,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 22:20:07,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155485182] [2024-11-21 22:20:07,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:07,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:20:07,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:20:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:20:07,031 INFO L87 Difference]: Start difference. First operand 4098 states and 4332 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2024-11-21 22:20:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:07,439 INFO L93 Difference]: Finished difference Result 8550 states and 9079 transitions. [2024-11-21 22:20:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:20:07,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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 791 [2024-11-21 22:20:07,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:07,452 INFO L225 Difference]: With dead ends: 8550 [2024-11-21 22:20:07,453 INFO L226 Difference]: Without dead ends: 4810 [2024-11-21 22:20:07,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:20:07,460 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 81 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:07,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 26 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-21 22:20:07,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2024-11-21 22:20:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4632. [2024-11-21 22:20:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4631 states have (on average 1.0563593176419779) internal successors, (4892), 4631 states have internal predecessors, (4892), 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) [2024-11-21 22:20:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 4892 transitions. [2024-11-21 22:20:07,524 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 4892 transitions. Word has length 791 [2024-11-21 22:20:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:07,525 INFO L471 AbstractCegarLoop]: Abstraction has 4632 states and 4892 transitions. [2024-11-21 22:20:07,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2024-11-21 22:20:07,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 4892 transitions. [2024-11-21 22:20:07,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2024-11-21 22:20:07,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:07,533 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:07,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-21 22:20:07,734 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 [2024-11-21 22:20:07,734 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:07,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:07,735 INFO L85 PathProgramCache]: Analyzing trace with hash 380264438, now seen corresponding path program 1 times [2024-11-21 22:20:07,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:07,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84764825] [2024-11-21 22:20:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:07,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1871 backedges. 1368 proven. 155 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-11-21 22:20:08,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84764825] [2024-11-21 22:20:08,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84764825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:20:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396883503] [2024-11-21 22:20:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:08,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:20:08,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:20:08,218 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) [2024-11-21 22:20:08,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 22:20:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:08,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:20:08,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:20:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1871 backedges. 1368 proven. 155 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-11-21 22:20:08,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:20:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1871 backedges. 1368 proven. 155 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-11-21 22:20:09,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396883503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 22:20:09,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 22:20:09,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-21 22:20:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319905556] [2024-11-21 22:20:09,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 22:20:09,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-21 22:20:09,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:09,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-21 22:20:09,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:20:09,095 INFO L87 Difference]: Start difference. First operand 4632 states and 4892 transitions. Second operand has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 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) [2024-11-21 22:20:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:09,830 INFO L93 Difference]: Finished difference Result 10330 states and 10924 transitions. [2024-11-21 22:20:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 22:20:09,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 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 805 [2024-11-21 22:20:09,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:09,840 INFO L225 Difference]: With dead ends: 10330 [2024-11-21 22:20:09,841 INFO L226 Difference]: Without dead ends: 6056 [2024-11-21 22:20:09,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1612 GetRequests, 1608 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:20:09,844 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 88 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:09,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 52 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:20:09,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2024-11-21 22:20:09,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 5344. [2024-11-21 22:20:09,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 1.0533408197641774) internal successors, (5628), 5343 states have internal predecessors, (5628), 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) [2024-11-21 22:20:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 5628 transitions. [2024-11-21 22:20:09,911 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 5628 transitions. Word has length 805 [2024-11-21 22:20:09,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:09,912 INFO L471 AbstractCegarLoop]: Abstraction has 5344 states and 5628 transitions. [2024-11-21 22:20:09,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 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) [2024-11-21 22:20:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 5628 transitions. [2024-11-21 22:20:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2024-11-21 22:20:09,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:09,922 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:09,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-21 22:20:10,122 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 [2024-11-21 22:20:10,123 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:10,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash 207381265, now seen corresponding path program 1 times [2024-11-21 22:20:10,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:10,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409110429] [2024-11-21 22:20:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:10,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2491 backedges. 1685 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2024-11-21 22:20:10,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:10,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409110429] [2024-11-21 22:20:10,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409110429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:20:10,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:20:10,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:20:10,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883663769] [2024-11-21 22:20:10,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:10,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:20:10,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:10,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:20:10,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:20:10,947 INFO L87 Difference]: Start difference. First operand 5344 states and 5628 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2024-11-21 22:20:11,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:11,270 INFO L93 Difference]: Finished difference Result 10152 states and 10715 transitions. [2024-11-21 22:20:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:20:11,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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 882 [2024-11-21 22:20:11,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:11,278 INFO L225 Difference]: With dead ends: 10152 [2024-11-21 22:20:11,279 INFO L226 Difference]: Without dead ends: 5166 [2024-11-21 22:20:11,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:20:11,283 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:11,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 218 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 22:20:11,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2024-11-21 22:20:11,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 4988. [2024-11-21 22:20:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 1.0449167836374573) internal successors, (5211), 4987 states have internal predecessors, (5211), 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) [2024-11-21 22:20:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 5211 transitions. [2024-11-21 22:20:11,333 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 5211 transitions. Word has length 882 [2024-11-21 22:20:11,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:11,334 INFO L471 AbstractCegarLoop]: Abstraction has 4988 states and 5211 transitions. [2024-11-21 22:20:11,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2024-11-21 22:20:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 5211 transitions. [2024-11-21 22:20:11,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2024-11-21 22:20:11,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:11,343 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:11,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-21 22:20:11,344 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:11,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:11,345 INFO L85 PathProgramCache]: Analyzing trace with hash -2060216049, now seen corresponding path program 1 times [2024-11-21 22:20:11,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:11,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570037500] [2024-11-21 22:20:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:11,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2527 backedges. 1696 proven. 93 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2024-11-21 22:20:12,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:12,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570037500] [2024-11-21 22:20:12,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570037500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:20:12,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961830286] [2024-11-21 22:20:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:12,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:20:12,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:20:12,072 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) [2024-11-21 22:20:12,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-21 22:20:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:12,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:20:12,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:20:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2527 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 2290 trivial. 0 not checked. [2024-11-21 22:20:12,377 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:20:12,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961830286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:20:12,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:20:12,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-21 22:20:12,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414196425] [2024-11-21 22:20:12,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:12,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:20:12,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:12,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:20:12,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:20:12,380 INFO L87 Difference]: Start difference. First operand 4988 states and 5211 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-11-21 22:20:12,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:12,731 INFO L93 Difference]: Finished difference Result 9796 states and 10244 transitions. [2024-11-21 22:20:12,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:20:12,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 906 [2024-11-21 22:20:12,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:12,738 INFO L225 Difference]: With dead ends: 9796 [2024-11-21 22:20:12,738 INFO L226 Difference]: Without dead ends: 5166 [2024-11-21 22:20:12,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:20:12,743 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 147 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:12,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 208 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 22:20:12,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2024-11-21 22:20:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 4810. [2024-11-21 22:20:12,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0411728009981285) internal successors, (5007), 4809 states have internal predecessors, (5007), 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) [2024-11-21 22:20:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 5007 transitions. [2024-11-21 22:20:12,797 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 5007 transitions. Word has length 906 [2024-11-21 22:20:12,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:12,797 INFO L471 AbstractCegarLoop]: Abstraction has 4810 states and 5007 transitions. [2024-11-21 22:20:12,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-11-21 22:20:12,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 5007 transitions. [2024-11-21 22:20:12,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2024-11-21 22:20:12,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:12,807 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:12,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-21 22:20:13,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-21 22:20:13,008 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:13,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:13,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1395619067, now seen corresponding path program 1 times [2024-11-21 22:20:13,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:13,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697787842] [2024-11-21 22:20:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:13,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 1710 proven. 93 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2024-11-21 22:20:13,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:13,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697787842] [2024-11-21 22:20:13,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697787842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:20:13,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369156734] [2024-11-21 22:20:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:13,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:20:13,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:20:13,724 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:20:13,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-21 22:20:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:14,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:20:14,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:20:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 864 proven. 0 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2024-11-21 22:20:14,686 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:20:14,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369156734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:20:14,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:20:14,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-21 22:20:14,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648314450] [2024-11-21 22:20:14,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:14,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:20:14,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:14,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:20:14,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:20:14,688 INFO L87 Difference]: Start difference. First operand 4810 states and 5007 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 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) [2024-11-21 22:20:15,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:15,001 INFO L93 Difference]: Finished difference Result 9974 states and 10392 transitions. [2024-11-21 22:20:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:20:15,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 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 914 [2024-11-21 22:20:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:15,010 INFO L225 Difference]: With dead ends: 9974 [2024-11-21 22:20:15,011 INFO L226 Difference]: Without dead ends: 5522 [2024-11-21 22:20:15,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 913 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:20:15,016 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:15,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 38 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 22:20:15,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2024-11-21 22:20:15,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 4988. [2024-11-21 22:20:15,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 1.040304792460397) internal successors, (5188), 4987 states have internal predecessors, (5188), 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) [2024-11-21 22:20:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 5188 transitions. [2024-11-21 22:20:15,070 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 5188 transitions. Word has length 914 [2024-11-21 22:20:15,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:15,071 INFO L471 AbstractCegarLoop]: Abstraction has 4988 states and 5188 transitions. [2024-11-21 22:20:15,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 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) [2024-11-21 22:20:15,072 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 5188 transitions. [2024-11-21 22:20:15,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2024-11-21 22:20:15,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:15,081 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:15,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-21 22:20:15,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:20:15,282 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:15,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:15,282 INFO L85 PathProgramCache]: Analyzing trace with hash 751779683, now seen corresponding path program 1 times [2024-11-21 22:20:15,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:15,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430218884] [2024-11-21 22:20:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:15,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3031 backedges. 1946 proven. 93 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2024-11-21 22:20:15,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:15,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430218884] [2024-11-21 22:20:15,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430218884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:20:15,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629953114] [2024-11-21 22:20:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:15,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:20:15,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:20:15,880 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:20:15,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-21 22:20:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:16,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:20:16,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:20:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3031 backedges. 2039 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2024-11-21 22:20:16,612 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:20:16,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629953114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:20:16,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:20:16,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-21 22:20:16,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624537757] [2024-11-21 22:20:16,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:16,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:20:16,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:16,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:20:16,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:20:16,615 INFO L87 Difference]: Start difference. First operand 4988 states and 5188 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2024-11-21 22:20:16,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:16,938 INFO L93 Difference]: Finished difference Result 9796 states and 10198 transitions. [2024-11-21 22:20:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:20:16,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 938 [2024-11-21 22:20:16,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:16,945 INFO L225 Difference]: With dead ends: 9796 [2024-11-21 22:20:16,945 INFO L226 Difference]: Without dead ends: 5166 [2024-11-21 22:20:16,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 937 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:20:16,950 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:16,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 52 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 22:20:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2024-11-21 22:20:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 4810. [2024-11-21 22:20:16,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0411728009981285) internal successors, (5007), 4809 states have internal predecessors, (5007), 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) [2024-11-21 22:20:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 5007 transitions. [2024-11-21 22:20:17,001 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 5007 transitions. Word has length 938 [2024-11-21 22:20:17,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:17,001 INFO L471 AbstractCegarLoop]: Abstraction has 4810 states and 5007 transitions. [2024-11-21 22:20:17,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2024-11-21 22:20:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 5007 transitions. [2024-11-21 22:20:17,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2024-11-21 22:20:17,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:17,014 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:17,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-21 22:20:17,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:20:17,215 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:17,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:17,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1927304045, now seen corresponding path program 1 times [2024-11-21 22:20:17,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:17,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37494541] [2024-11-21 22:20:17,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:17,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 1701 proven. 0 refuted. 0 times theorem prover too weak. 1974 trivial. 0 not checked. [2024-11-21 22:20:17,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:17,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37494541] [2024-11-21 22:20:17,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37494541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:20:17,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:20:17,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-21 22:20:17,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216355788] [2024-11-21 22:20:17,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:17,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 22:20:17,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:17,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 22:20:17,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:20:17,961 INFO L87 Difference]: Start difference. First operand 4810 states and 5007 transitions. Second operand has 7 states, 7 states have (on average 49.857142857142854) internal successors, (349), 6 states have internal predecessors, (349), 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) [2024-11-21 22:20:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:18,608 INFO L93 Difference]: Finished difference Result 9490 states and 9886 transitions. [2024-11-21 22:20:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-21 22:20:18,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.857142857142854) internal successors, (349), 6 states have internal predecessors, (349), 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 1015 [2024-11-21 22:20:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:18,615 INFO L225 Difference]: With dead ends: 9490 [2024-11-21 22:20:18,616 INFO L226 Difference]: Without dead ends: 4988 [2024-11-21 22:20:18,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:20:18,620 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 36 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:18,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 28 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:20:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2024-11-21 22:20:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4810. [2024-11-21 22:20:18,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0330630068621336) internal successors, (4968), 4809 states have internal predecessors, (4968), 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) [2024-11-21 22:20:18,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4968 transitions. [2024-11-21 22:20:18,663 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4968 transitions. Word has length 1015 [2024-11-21 22:20:18,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:18,664 INFO L471 AbstractCegarLoop]: Abstraction has 4810 states and 4968 transitions. [2024-11-21 22:20:18,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.857142857142854) internal successors, (349), 6 states have internal predecessors, (349), 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) [2024-11-21 22:20:18,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4968 transitions. [2024-11-21 22:20:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2024-11-21 22:20:18,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:18,697 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:18,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-21 22:20:18,697 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:18,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:18,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1401544166, now seen corresponding path program 1 times [2024-11-21 22:20:18,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:18,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609691388] [2024-11-21 22:20:18,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:18,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3551 backedges. 1082 proven. 0 refuted. 0 times theorem prover too weak. 2469 trivial. 0 not checked. [2024-11-21 22:20:19,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:19,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609691388] [2024-11-21 22:20:19,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609691388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:20:19,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:20:19,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:20:19,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079024392] [2024-11-21 22:20:19,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:19,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:20:19,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:19,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:20:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:20:19,546 INFO L87 Difference]: Start difference. First operand 4810 states and 4968 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2024-11-21 22:20:19,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:19,872 INFO L93 Difference]: Finished difference Result 9262 states and 9576 transitions. [2024-11-21 22:20:19,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:20:19,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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 1047 [2024-11-21 22:20:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:19,879 INFO L225 Difference]: With dead ends: 9262 [2024-11-21 22:20:19,879 INFO L226 Difference]: Without dead ends: 4810 [2024-11-21 22:20:19,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:20:19,884 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 66 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:19,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 223 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 22:20:19,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2024-11-21 22:20:19,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4810. [2024-11-21 22:20:19,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0295279683925973) internal successors, (4951), 4809 states have internal predecessors, (4951), 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) [2024-11-21 22:20:19,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4951 transitions. [2024-11-21 22:20:19,927 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4951 transitions. Word has length 1047 [2024-11-21 22:20:19,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:19,927 INFO L471 AbstractCegarLoop]: Abstraction has 4810 states and 4951 transitions. [2024-11-21 22:20:19,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2024-11-21 22:20:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4951 transitions. [2024-11-21 22:20:19,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2024-11-21 22:20:19,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:19,939 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:19,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-21 22:20:19,939 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:19,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1689291374, now seen corresponding path program 1 times [2024-11-21 22:20:19,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:19,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294285438] [2024-11-21 22:20:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:19,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3788 backedges. 2738 proven. 72 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2024-11-21 22:20:21,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294285438] [2024-11-21 22:20:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294285438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:20:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750195729] [2024-11-21 22:20:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:21,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:20:21,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:20:21,096 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:20:21,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-21 22:20:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:21,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 22:20:21,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:20:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3788 backedges. 2697 proven. 666 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-11-21 22:20:22,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:20:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3788 backedges. 2810 proven. 0 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2024-11-21 22:20:22,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750195729] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:20:22,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:20:22,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 9 [2024-11-21 22:20:22,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338380306] [2024-11-21 22:20:22,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:22,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 22:20:22,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:22,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 22:20:22,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:20:22,709 INFO L87 Difference]: Start difference. First operand 4810 states and 4951 transitions. Second operand has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 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) [2024-11-21 22:20:23,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:23,130 INFO L93 Difference]: Finished difference Result 9618 states and 9910 transitions. [2024-11-21 22:20:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:20:23,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 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 1095 [2024-11-21 22:20:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:23,137 INFO L225 Difference]: With dead ends: 9618 [2024-11-21 22:20:23,137 INFO L226 Difference]: Without dead ends: 5166 [2024-11-21 22:20:23,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2193 GetRequests, 2185 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:20:23,141 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 90 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:23,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 9 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-21 22:20:23,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2024-11-21 22:20:23,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 4988. [2024-11-21 22:20:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 1.0268698616402647) internal successors, (5121), 4987 states have internal predecessors, (5121), 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) [2024-11-21 22:20:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 5121 transitions. [2024-11-21 22:20:23,183 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 5121 transitions. Word has length 1095 [2024-11-21 22:20:23,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:23,184 INFO L471 AbstractCegarLoop]: Abstraction has 4988 states and 5121 transitions. [2024-11-21 22:20:23,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 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) [2024-11-21 22:20:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 5121 transitions. [2024-11-21 22:20:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1336 [2024-11-21 22:20:23,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:23,199 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:23,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-21 22:20:23,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-21 22:20:23,400 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:23,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:23,400 INFO L85 PathProgramCache]: Analyzing trace with hash -808907614, now seen corresponding path program 1 times [2024-11-21 22:20:23,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:23,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011395120] [2024-11-21 22:20:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:23,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5860 backedges. 3029 proven. 0 refuted. 0 times theorem prover too weak. 2831 trivial. 0 not checked. [2024-11-21 22:20:24,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:24,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011395120] [2024-11-21 22:20:24,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011395120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:20:24,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:20:24,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:20:24,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285083224] [2024-11-21 22:20:24,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:24,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:20:24,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:24,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:20:24,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:20:24,451 INFO L87 Difference]: Start difference. First operand 4988 states and 5121 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2024-11-21 22:20:24,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:24,802 INFO L93 Difference]: Finished difference Result 9618 states and 9882 transitions. [2024-11-21 22:20:24,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:20:24,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 1335 [2024-11-21 22:20:24,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:24,809 INFO L225 Difference]: With dead ends: 9618 [2024-11-21 22:20:24,809 INFO L226 Difference]: Without dead ends: 4988 [2024-11-21 22:20:24,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:20:24,812 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 53 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:24,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 225 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 22:20:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2024-11-21 22:20:24,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4810. [2024-11-21 22:20:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.02640881680183) internal successors, (4936), 4809 states have internal predecessors, (4936), 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) [2024-11-21 22:20:24,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4936 transitions. [2024-11-21 22:20:24,854 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4936 transitions. Word has length 1335 [2024-11-21 22:20:24,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:24,855 INFO L471 AbstractCegarLoop]: Abstraction has 4810 states and 4936 transitions. [2024-11-21 22:20:24,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2024-11-21 22:20:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4936 transitions. [2024-11-21 22:20:24,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1383 [2024-11-21 22:20:24,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:20:24,869 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:24,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-21 22:20:24,870 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:20:24,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:20:24,870 INFO L85 PathProgramCache]: Analyzing trace with hash 687963403, now seen corresponding path program 1 times [2024-11-21 22:20:24,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:20:24,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3986266] [2024-11-21 22:20:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:24,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:20:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5927 backedges. 4476 proven. 72 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2024-11-21 22:20:26,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:20:26,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3986266] [2024-11-21 22:20:26,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3986266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:20:26,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944420119] [2024-11-21 22:20:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:20:26,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:20:26,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:20:26,295 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:20:26,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-21 22:20:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:20:26,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 1670 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 22:20:26,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:20:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5927 backedges. 4385 proven. 716 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2024-11-21 22:20:27,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:20:27,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5927 backedges. 4548 proven. 0 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2024-11-21 22:20:27,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944420119] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:20:27,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:20:27,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 9 [2024-11-21 22:20:27,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193072293] [2024-11-21 22:20:27,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:20:27,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 22:20:27,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:20:27,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 22:20:27,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:20:27,940 INFO L87 Difference]: Start difference. First operand 4810 states and 4936 transitions. Second operand has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 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) [2024-11-21 22:20:28,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:20:28,316 INFO L93 Difference]: Finished difference Result 9616 states and 9872 transitions. [2024-11-21 22:20:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:20:28,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 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 1382 [2024-11-21 22:20:28,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:20:28,318 INFO L225 Difference]: With dead ends: 9616 [2024-11-21 22:20:28,318 INFO L226 Difference]: Without dead ends: 0 [2024-11-21 22:20:28,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2767 GetRequests, 2760 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:20:28,324 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 40 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:20:28,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 8 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-21 22:20:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-21 22:20:28,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-21 22:20:28,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:20:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-21 22:20:28,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1382 [2024-11-21 22:20:28,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:20:28,325 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-21 22:20:28,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 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) [2024-11-21 22:20:28,326 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-21 22:20:28,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-21 22:20:28,329 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-21 22:20:28,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-21 22:20:28,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-21 22:20:28,536 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:20:28,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-21 22:20:31,597 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-21 22:20:31,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:20:31 BoogieIcfgContainer [2024-11-21 22:20:31,612 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-21 22:20:31,613 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-21 22:20:31,613 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-21 22:20:31,613 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-21 22:20:31,614 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:19:48" (3/4) ... [2024-11-21 22:20:31,618 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-21 22:20:31,640 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-21 22:20:31,641 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-21 22:20:31,642 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-21 22:20:31,643 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-21 22:20:31,807 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-21 22:20:31,808 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-21 22:20:31,808 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-21 22:20:31,808 INFO L158 Benchmark]: Toolchain (without parser) took 45739.27ms. Allocated memory was 174.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 95.5MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 157.1MB. Max. memory is 16.1GB. [2024-11-21 22:20:31,809 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-21 22:20:31,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 653.54ms. Allocated memory is still 174.1MB. Free memory was 95.1MB in the beginning and 135.0MB in the end (delta: -39.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-21 22:20:31,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.60ms. Allocated memory is still 174.1MB. Free memory was 135.0MB in the beginning and 124.8MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-21 22:20:31,810 INFO L158 Benchmark]: Boogie Preprocessor took 145.93ms. Allocated memory is still 174.1MB. Free memory was 124.8MB in the beginning and 112.1MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-21 22:20:31,810 INFO L158 Benchmark]: RCFGBuilder took 1261.23ms. Allocated memory is still 174.1MB. Free memory was 112.1MB in the beginning and 77.1MB in the end (delta: 35.0MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. [2024-11-21 22:20:31,810 INFO L158 Benchmark]: TraceAbstraction took 43389.97ms. Allocated memory was 174.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 76.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 779.9MB. Max. memory is 16.1GB. [2024-11-21 22:20:31,811 INFO L158 Benchmark]: Witness Printer took 194.86ms. Allocated memory is still 1.4GB. Free memory was 1.2GB in the beginning and 1.1GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-21 22:20:31,812 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 653.54ms. Allocated memory is still 174.1MB. Free memory was 95.1MB in the beginning and 135.0MB in the end (delta: -39.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.60ms. Allocated memory is still 174.1MB. Free memory was 135.0MB in the beginning and 124.8MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 145.93ms. Allocated memory is still 174.1MB. Free memory was 124.8MB in the beginning and 112.1MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 1261.23ms. Allocated memory is still 174.1MB. Free memory was 112.1MB in the beginning and 77.1MB in the end (delta: 35.0MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. * TraceAbstraction took 43389.97ms. Allocated memory was 174.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 76.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 779.9MB. Max. memory is 16.1GB. * Witness Printer took 194.86ms. Allocated memory is still 1.4GB. Free memory was 1.2GB in the beginning and 1.1GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 122]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.3s, OverallIterations: 25, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2655 SdHoareTripleChecker+Valid, 12.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2655 mSDsluCounter, 2909 SdHoareTripleChecker+Invalid, 9.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 138 mSDsCounter, 1298 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12608 IncrementalHoareTripleChecker+Invalid, 13906 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1298 mSolverCounterUnsat, 2771 mSDtfsCounter, 12608 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12967 GetRequests, 12893 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5344occurred in iteration=16, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 25 MinimizatonAttempts, 5518 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 25864 NumberOfCodeBlocks, 25864 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 29105 ConstructedInterpolants, 0 QuantifiedInterpolants, 69736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11933 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 41 InterpolantComputations, 24 PerfectInterpolantSequences, 80863/83874 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: (((((((((((((a24 == 1) && (a12 <= 600006)) && (81 <= a12)) && (8 <= a15)) || (((a24 == 1) && (a12 <= 600006)) && (10 <= a21))) || (((a21 == 8) && (a24 == 1)) && (a12 <= 600006))) || ((((long long) a12 + 43) <= 0) && (a15 <= 6))) || (((((a24 == 1) && (7 == a21)) && (a12 <= 600006)) && (0 <= ((long long) a12 + 42))) && (8 <= a15))) || ((((((long long) a12 + 43) <= 0) && (a24 == 1)) && (7 == a21)) && (a15 <= 8))) || ((((a24 == 1) && (a21 <= 6)) && (a12 <= 600006)) && (0 <= ((long long) a12 + 42)))) || (((a21 <= 9) && (a24 == 1)) && (a15 <= 6))) || (((((a24 == 1) && (a15 <= 8)) && (a21 == 9)) && (a12 <= 600006)) && (0 <= ((long long) a12 + 42)))) || ((((a24 == 1) && (a15 <= 8)) && (a21 <= 6)) && (((long long) 49 + a12) <= 0))) RESULT: Ultimate proved your program to be correct! [2024-11-21 22:20:31,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE