./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem11_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem11_label22.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 782212e92ca4a15b07e81f4c0ca47da63585acb1e5a128bc81275e5c438e9fe1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:21:39,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:21:39,342 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:21:39,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:21:39,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:21:39,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:21:39,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:21:39,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:21:39,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:21:39,381 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:21:39,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:21:39,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:21:39,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:21:39,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:21:39,385 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:21:39,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:21:39,386 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:21:39,386 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:21:39,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:21:39,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:21:39,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:21:39,388 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:21:39,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:21:39,389 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:21:39,389 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:21:39,389 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:21:39,389 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:21:39,389 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:21:39,390 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:21:39,390 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:21:39,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:21:39,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:21:39,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:21:39,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:21:39,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:21:39,392 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:21:39,393 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:21:39,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:21:39,393 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:21:39,393 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:21:39,393 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:21:39,394 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:21:39,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 782212e92ca4a15b07e81f4c0ca47da63585acb1e5a128bc81275e5c438e9fe1 [2024-11-18 10:21:39,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:21:39,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:21:39,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:21:39,640 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:21:39,641 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:21:39,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label22.c [2024-11-18 10:21:40,979 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:21:41,218 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:21:41,219 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label22.c [2024-11-18 10:21:41,238 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc3cd3ae5/8c0254684a344dfe931fc57c2ffaad8c/FLAG625fe47fc [2024-11-18 10:21:41,548 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc3cd3ae5/8c0254684a344dfe931fc57c2ffaad8c [2024-11-18 10:21:41,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:21:41,551 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:21:41,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:21:41,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:21:41,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:21:41,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:21:41" (1/1) ... [2024-11-18 10:21:41,559 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bce5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:41, skipping insertion in model container [2024-11-18 10:21:41,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:21:41" (1/1) ... [2024-11-18 10:21:41,605 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:21:41,793 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/Problem11_label22.c[8004,8017] [2024-11-18 10:21:41,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:21:41,975 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:21:42,006 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/Problem11_label22.c[8004,8017] [2024-11-18 10:21:42,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:21:42,123 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:21:42,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42 WrapperNode [2024-11-18 10:21:42,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:21:42,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:21:42,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:21:42,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:21:42,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,250 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-11-18 10:21:42,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:21:42,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:21:42,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:21:42,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:21:42,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,313 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]. [2024-11-18 10:21:42,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,351 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,396 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:21:42,397 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:21:42,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:21:42,398 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:21:42,398 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:21:42,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:21:42,430 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) [2024-11-18 10:21:42,432 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 [2024-11-18 10:21:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:21:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:21:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:21:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:21:42,519 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:21:42,521 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:21:43,694 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-18 10:21:43,694 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:21:43,714 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:21:43,715 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:21:43,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:21:43 BoogieIcfgContainer [2024-11-18 10:21:43,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:21:43,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:21:43,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:21:43,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:21:43,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:21:41" (1/3) ... [2024-11-18 10:21:43,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1751450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:21:43, skipping insertion in model container [2024-11-18 10:21:43,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (2/3) ... [2024-11-18 10:21:43,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1751450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:21:43, skipping insertion in model container [2024-11-18 10:21:43,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:21:43" (3/3) ... [2024-11-18 10:21:43,723 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label22.c [2024-11-18 10:21:43,736 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:21:43,737 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:21:43,797 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:21:43,802 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;@36261ad0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:21:43,802 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:21:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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) [2024-11-18 10:21:43,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 10:21:43,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:43,816 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:43,817 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:43,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:43,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1246856209, now seen corresponding path program 1 times [2024-11-18 10:21:43,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:43,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591758806] [2024-11-18 10:21:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:43,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:44,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:44,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:44,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591758806] [2024-11-18 10:21:44,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591758806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:44,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:44,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:21:44,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639112563] [2024-11-18 10:21:44,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:44,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:44,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:44,167 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:21:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:45,074 INFO L93 Difference]: Finished difference Result 761 states and 1345 transitions. [2024-11-18 10:21:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:45,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-18 10:21:45,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:45,088 INFO L225 Difference]: With dead ends: 761 [2024-11-18 10:21:45,088 INFO L226 Difference]: Without dead ends: 413 [2024-11-18 10:21:45,091 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 [2024-11-18 10:21:45,093 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 173 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:45,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 222 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:21:45,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-18 10:21:45,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2024-11-18 10:21:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.453883495145631) internal successors, (599), 412 states have internal predecessors, (599), 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) [2024-11-18 10:21:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 599 transitions. [2024-11-18 10:21:45,151 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 599 transitions. Word has length 55 [2024-11-18 10:21:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:45,152 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 599 transitions. [2024-11-18 10:21:45,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:21:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 599 transitions. [2024-11-18 10:21:45,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 10:21:45,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:45,155 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, 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] [2024-11-18 10:21:45,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:21:45,155 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:45,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:45,156 INFO L85 PathProgramCache]: Analyzing trace with hash -149441032, now seen corresponding path program 1 times [2024-11-18 10:21:45,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:45,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213824577] [2024-11-18 10:21:45,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:45,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:45,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213824577] [2024-11-18 10:21:45,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213824577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:45,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:45,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:21:45,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054462276] [2024-11-18 10:21:45,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:45,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:45,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:45,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:45,308 INFO L87 Difference]: Start difference. First operand 413 states and 599 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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) [2024-11-18 10:21:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:45,937 INFO L93 Difference]: Finished difference Result 1211 states and 1763 transitions. [2024-11-18 10:21:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:45,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 123 [2024-11-18 10:21:45,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:45,941 INFO L225 Difference]: With dead ends: 1211 [2024-11-18 10:21:45,941 INFO L226 Difference]: Without dead ends: 800 [2024-11-18 10:21:45,942 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 [2024-11-18 10:21:45,943 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 142 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:45,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 120 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:21:45,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-18 10:21:45,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 789. [2024-11-18 10:21:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 1.3743654822335025) internal successors, (1083), 788 states have internal predecessors, (1083), 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) [2024-11-18 10:21:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1083 transitions. [2024-11-18 10:21:45,964 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1083 transitions. Word has length 123 [2024-11-18 10:21:45,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:45,965 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 1083 transitions. [2024-11-18 10:21:45,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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) [2024-11-18 10:21:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1083 transitions. [2024-11-18 10:21:45,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 10:21:45,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:45,968 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, 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] [2024-11-18 10:21:45,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:21:45,969 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:45,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:45,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1649165251, now seen corresponding path program 1 times [2024-11-18 10:21:45,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:45,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884051364] [2024-11-18 10:21:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:45,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:46,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:46,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884051364] [2024-11-18 10:21:46,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884051364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:46,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:46,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:21:46,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258127210] [2024-11-18 10:21:46,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:46,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:46,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:46,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:46,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:46,249 INFO L87 Difference]: Start difference. First operand 789 states and 1083 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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) [2024-11-18 10:21:46,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:46,814 INFO L93 Difference]: Finished difference Result 1945 states and 2612 transitions. [2024-11-18 10:21:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:46,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 125 [2024-11-18 10:21:46,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:46,818 INFO L225 Difference]: With dead ends: 1945 [2024-11-18 10:21:46,818 INFO L226 Difference]: Without dead ends: 1158 [2024-11-18 10:21:46,819 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 [2024-11-18 10:21:46,820 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:46,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 190 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:21:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2024-11-18 10:21:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1157. [2024-11-18 10:21:46,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1156 states have (on average 1.2707612456747406) internal successors, (1469), 1156 states have internal predecessors, (1469), 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) [2024-11-18 10:21:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1469 transitions. [2024-11-18 10:21:46,846 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1469 transitions. Word has length 125 [2024-11-18 10:21:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:46,847 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 1469 transitions. [2024-11-18 10:21:46,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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) [2024-11-18 10:21:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1469 transitions. [2024-11-18 10:21:46,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 10:21:46,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:46,855 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:46,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:21:46,858 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:46,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash 693126941, now seen corresponding path program 1 times [2024-11-18 10:21:46,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:46,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258119042] [2024-11-18 10:21:46,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:46,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:47,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:47,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258119042] [2024-11-18 10:21:47,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258119042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:47,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:47,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:21:47,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400566116] [2024-11-18 10:21:47,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:47,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:47,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:47,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:47,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:47,075 INFO L87 Difference]: Start difference. First operand 1157 states and 1469 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2024-11-18 10:21:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:47,684 INFO L93 Difference]: Finished difference Result 2519 states and 3349 transitions. [2024-11-18 10:21:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:47,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 182 [2024-11-18 10:21:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:47,691 INFO L225 Difference]: With dead ends: 2519 [2024-11-18 10:21:47,692 INFO L226 Difference]: Without dead ends: 1548 [2024-11-18 10:21:47,693 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 [2024-11-18 10:21:47,694 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 180 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:47,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 322 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:21:47,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2024-11-18 10:21:47,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1545. [2024-11-18 10:21:47,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1544 states have (on average 1.2933937823834196) internal successors, (1997), 1544 states have internal predecessors, (1997), 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) [2024-11-18 10:21:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1997 transitions. [2024-11-18 10:21:47,713 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1997 transitions. Word has length 182 [2024-11-18 10:21:47,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:47,714 INFO L471 AbstractCegarLoop]: Abstraction has 1545 states and 1997 transitions. [2024-11-18 10:21:47,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2024-11-18 10:21:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1997 transitions. [2024-11-18 10:21:47,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-18 10:21:47,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:47,716 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:47,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:21:47,717 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:47,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:47,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1614618080, now seen corresponding path program 1 times [2024-11-18 10:21:47,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:47,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536103349] [2024-11-18 10:21:47,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:47,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-18 10:21:47,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:47,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536103349] [2024-11-18 10:21:47,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536103349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:47,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:47,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:21:47,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534289199] [2024-11-18 10:21:47,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:47,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:47,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:47,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:47,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:47,929 INFO L87 Difference]: Start difference. First operand 1545 states and 1997 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-11-18 10:21:48,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:48,569 INFO L93 Difference]: Finished difference Result 3650 states and 4815 transitions. [2024-11-18 10:21:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:48,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 237 [2024-11-18 10:21:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:48,576 INFO L225 Difference]: With dead ends: 3650 [2024-11-18 10:21:48,576 INFO L226 Difference]: Without dead ends: 2291 [2024-11-18 10:21:48,578 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 [2024-11-18 10:21:48,579 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 142 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:48,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 392 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:21:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2024-11-18 10:21:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2098. [2024-11-18 10:21:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2097 states have (on average 1.2675250357653791) internal successors, (2658), 2097 states have internal predecessors, (2658), 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) [2024-11-18 10:21:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 2658 transitions. [2024-11-18 10:21:48,609 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 2658 transitions. Word has length 237 [2024-11-18 10:21:48,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:48,610 INFO L471 AbstractCegarLoop]: Abstraction has 2098 states and 2658 transitions. [2024-11-18 10:21:48,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-11-18 10:21:48,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 2658 transitions. [2024-11-18 10:21:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 10:21:48,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:48,613 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:48,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:21:48,613 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:48,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:48,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1116092079, now seen corresponding path program 1 times [2024-11-18 10:21:48,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:48,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108814066] [2024-11-18 10:21:48,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:48,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 91 proven. 14 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-18 10:21:49,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:49,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108814066] [2024-11-18 10:21:49,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108814066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:21:49,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510579131] [2024-11-18 10:21:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:49,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:21:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:21:49,095 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) [2024-11-18 10:21:49,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 10:21:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:49,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:21:49,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:21:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-18 10:21:49,304 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:21:49,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510579131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:49,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:21:49,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-18 10:21:49,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730901460] [2024-11-18 10:21:49,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:49,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:49,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:49,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:49,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:21:49,308 INFO L87 Difference]: Start difference. First operand 2098 states and 2658 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-11-18 10:21:49,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:49,957 INFO L93 Difference]: Finished difference Result 5671 states and 7287 transitions. [2024-11-18 10:21:49,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:49,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 243 [2024-11-18 10:21:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:49,966 INFO L225 Difference]: With dead ends: 5671 [2024-11-18 10:21:49,966 INFO L226 Difference]: Without dead ends: 3575 [2024-11-18 10:21:49,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:21:49,970 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 175 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:49,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 270 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:21:49,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2024-11-18 10:21:50,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 3572. [2024-11-18 10:21:50,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3572 states, 3571 states have (on average 1.2509101092131056) internal successors, (4467), 3571 states have internal predecessors, (4467), 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) [2024-11-18 10:21:50,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 4467 transitions. [2024-11-18 10:21:50,053 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 4467 transitions. Word has length 243 [2024-11-18 10:21:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:50,053 INFO L471 AbstractCegarLoop]: Abstraction has 3572 states and 4467 transitions. [2024-11-18 10:21:50,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-11-18 10:21:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 4467 transitions. [2024-11-18 10:21:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-18 10:21:50,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:50,057 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:50,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 10:21:50,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 10:21:50,259 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:50,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash 741694043, now seen corresponding path program 1 times [2024-11-18 10:21:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:50,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398363662] [2024-11-18 10:21:50,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:50,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:50,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:50,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398363662] [2024-11-18 10:21:50,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398363662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:50,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:50,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:21:50,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378886604] [2024-11-18 10:21:50,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:50,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:21:50,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:50,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:21:50,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:21:50,522 INFO L87 Difference]: Start difference. First operand 3572 states and 4467 transitions. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 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) [2024-11-18 10:21:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:51,527 INFO L93 Difference]: Finished difference Result 11413 states and 14584 transitions. [2024-11-18 10:21:51,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:21:51,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 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 282 [2024-11-18 10:21:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:51,547 INFO L225 Difference]: With dead ends: 11413 [2024-11-18 10:21:51,548 INFO L226 Difference]: Without dead ends: 8027 [2024-11-18 10:21:51,553 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 [2024-11-18 10:21:51,553 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 288 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:51,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 89 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:21:51,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8027 states. [2024-11-18 10:21:51,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8027 to 8025. [2024-11-18 10:21:51,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8025 states, 8024 states have (on average 1.2534895314057826) internal successors, (10058), 8024 states have internal predecessors, (10058), 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) [2024-11-18 10:21:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8025 states to 8025 states and 10058 transitions. [2024-11-18 10:21:51,661 INFO L78 Accepts]: Start accepts. Automaton has 8025 states and 10058 transitions. Word has length 282 [2024-11-18 10:21:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:51,661 INFO L471 AbstractCegarLoop]: Abstraction has 8025 states and 10058 transitions. [2024-11-18 10:21:51,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 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) [2024-11-18 10:21:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 8025 states and 10058 transitions. [2024-11-18 10:21:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-18 10:21:51,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:51,666 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:51,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:21:51,667 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:51,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:51,667 INFO L85 PathProgramCache]: Analyzing trace with hash 81123789, now seen corresponding path program 1 times [2024-11-18 10:21:51,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:51,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034356467] [2024-11-18 10:21:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:51,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-18 10:21:51,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:51,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034356467] [2024-11-18 10:21:51,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034356467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:51,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:51,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:21:51,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979692890] [2024-11-18 10:21:51,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:51,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:51,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:51,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:51,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:51,870 INFO L87 Difference]: Start difference. First operand 8025 states and 10058 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2024-11-18 10:21:52,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:52,527 INFO L93 Difference]: Finished difference Result 18085 states and 22879 transitions. [2024-11-18 10:21:52,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:52,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 291 [2024-11-18 10:21:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:52,566 INFO L225 Difference]: With dead ends: 18085 [2024-11-18 10:21:52,566 INFO L226 Difference]: Without dead ends: 10246 [2024-11-18 10:21:52,579 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 [2024-11-18 10:21:52,581 INFO L432 NwaCegarLoop]: 362 mSDtfsCounter, 141 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:52,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 384 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:21:52,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10246 states. [2024-11-18 10:21:52,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10246 to 10232. [2024-11-18 10:21:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10232 states, 10231 states have (on average 1.221385983774802) internal successors, (12496), 10231 states have internal predecessors, (12496), 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) [2024-11-18 10:21:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10232 states to 10232 states and 12496 transitions. [2024-11-18 10:21:52,796 INFO L78 Accepts]: Start accepts. Automaton has 10232 states and 12496 transitions. Word has length 291 [2024-11-18 10:21:52,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:52,797 INFO L471 AbstractCegarLoop]: Abstraction has 10232 states and 12496 transitions. [2024-11-18 10:21:52,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2024-11-18 10:21:52,798 INFO L276 IsEmpty]: Start isEmpty. Operand 10232 states and 12496 transitions. [2024-11-18 10:21:52,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-18 10:21:52,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:52,807 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:52,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:21:52,808 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:52,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:52,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1228370302, now seen corresponding path program 1 times [2024-11-18 10:21:52,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:52,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507390738] [2024-11-18 10:21:52,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:52,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 173 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:53,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:53,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507390738] [2024-11-18 10:21:53,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507390738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:21:53,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755775948] [2024-11-18 10:21:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:53,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:21:53,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:21:53,345 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) [2024-11-18 10:21:53,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 10:21:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:53,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 10:21:53,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:21:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 173 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:54,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:21:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 173 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:56,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755775948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:21:56,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:21:56,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 10:21:56,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848123797] [2024-11-18 10:21:56,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:21:56,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 10:21:56,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:56,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 10:21:56,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:21:56,136 INFO L87 Difference]: Start difference. First operand 10232 states and 12496 transitions. Second operand has 8 states, 8 states have (on average 72.625) internal successors, (581), 7 states have internal predecessors, (581), 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) [2024-11-18 10:21:58,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:58,175 INFO L93 Difference]: Finished difference Result 23641 states and 29105 transitions. [2024-11-18 10:21:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 10:21:58,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 72.625) internal successors, (581), 7 states have internal predecessors, (581), 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 [2024-11-18 10:21:58,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:58,198 INFO L225 Difference]: With dead ends: 23641 [2024-11-18 10:21:58,199 INFO L226 Difference]: Without dead ends: 14148 [2024-11-18 10:21:58,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-18 10:21:58,209 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 897 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 3173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:58,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 199 Invalid, 3173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:21:58,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14148 states. [2024-11-18 10:21:58,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14148 to 10943. [2024-11-18 10:21:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10943 states, 10942 states have (on average 1.1883567903491135) internal successors, (13003), 10942 states have internal predecessors, (13003), 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) [2024-11-18 10:21:58,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10943 states to 10943 states and 13003 transitions. [2024-11-18 10:21:58,343 INFO L78 Accepts]: Start accepts. Automaton has 10943 states and 13003 transitions. Word has length 329 [2024-11-18 10:21:58,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:58,343 INFO L471 AbstractCegarLoop]: Abstraction has 10943 states and 13003 transitions. [2024-11-18 10:21:58,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.625) internal successors, (581), 7 states have internal predecessors, (581), 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) [2024-11-18 10:21:58,344 INFO L276 IsEmpty]: Start isEmpty. Operand 10943 states and 13003 transitions. [2024-11-18 10:21:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-11-18 10:21:58,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:58,353 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, 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, 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] [2024-11-18 10:21:58,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 10:21:58,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-18 10:21:58,554 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:58,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:58,554 INFO L85 PathProgramCache]: Analyzing trace with hash -333660676, now seen corresponding path program 1 times [2024-11-18 10:21:58,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:58,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591261283] [2024-11-18 10:21:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:58,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-18 10:21:58,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:58,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591261283] [2024-11-18 10:21:58,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591261283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:58,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:58,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:21:58,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286259584] [2024-11-18 10:21:58,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:58,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:58,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:58,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:58,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:58,876 INFO L87 Difference]: Start difference. First operand 10943 states and 13003 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 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) [2024-11-18 10:21:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:59,506 INFO L93 Difference]: Finished difference Result 27057 states and 32311 transitions. [2024-11-18 10:21:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:59,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 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 349 [2024-11-18 10:21:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:59,530 INFO L225 Difference]: With dead ends: 27057 [2024-11-18 10:21:59,530 INFO L226 Difference]: Without dead ends: 16852 [2024-11-18 10:21:59,540 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 [2024-11-18 10:21:59,540 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 139 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:59,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 141 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:21:59,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16852 states. [2024-11-18 10:21:59,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16852 to 16848. [2024-11-18 10:21:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16848 states, 16847 states have (on average 1.167388852614709) internal successors, (19667), 16847 states have internal predecessors, (19667), 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) [2024-11-18 10:21:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16848 states to 16848 states and 19667 transitions. [2024-11-18 10:21:59,818 INFO L78 Accepts]: Start accepts. Automaton has 16848 states and 19667 transitions. Word has length 349 [2024-11-18 10:21:59,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:59,819 INFO L471 AbstractCegarLoop]: Abstraction has 16848 states and 19667 transitions. [2024-11-18 10:21:59,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 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) [2024-11-18 10:21:59,819 INFO L276 IsEmpty]: Start isEmpty. Operand 16848 states and 19667 transitions. [2024-11-18 10:21:59,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-11-18 10:21:59,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:59,832 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:59,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:21:59,833 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:59,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash 413217873, now seen corresponding path program 1 times [2024-11-18 10:21:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:59,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24891028] [2024-11-18 10:21:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:22:00,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:00,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24891028] [2024-11-18 10:22:00,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24891028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:00,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:00,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:00,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645142192] [2024-11-18 10:22:00,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:00,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:00,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:00,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:00,095 INFO L87 Difference]: Start difference. First operand 16848 states and 19667 transitions. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2024-11-18 10:22:00,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:00,701 INFO L93 Difference]: Finished difference Result 35910 states and 41957 transitions. [2024-11-18 10:22:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:00,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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 357 [2024-11-18 10:22:00,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:00,732 INFO L225 Difference]: With dead ends: 35910 [2024-11-18 10:22:00,732 INFO L226 Difference]: Without dead ends: 20168 [2024-11-18 10:22:00,747 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 [2024-11-18 10:22:00,747 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 58 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:00,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 75 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:22:00,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20168 states. [2024-11-18 10:22:00,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20168 to 20160. [2024-11-18 10:22:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20160 states, 20159 states have (on average 1.155960117069299) internal successors, (23303), 20159 states have internal predecessors, (23303), 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) [2024-11-18 10:22:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20160 states to 20160 states and 23303 transitions. [2024-11-18 10:22:00,941 INFO L78 Accepts]: Start accepts. Automaton has 20160 states and 23303 transitions. Word has length 357 [2024-11-18 10:22:00,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:00,941 INFO L471 AbstractCegarLoop]: Abstraction has 20160 states and 23303 transitions. [2024-11-18 10:22:00,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2024-11-18 10:22:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 20160 states and 23303 transitions. [2024-11-18 10:22:00,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-18 10:22:00,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:00,953 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, 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, 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] [2024-11-18 10:22:00,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 10:22:00,953 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:00,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:00,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1498658965, now seen corresponding path program 1 times [2024-11-18 10:22:00,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:00,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709219174] [2024-11-18 10:22:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:00,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 10:22:01,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:01,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709219174] [2024-11-18 10:22:01,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709219174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:01,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:01,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:01,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967882533] [2024-11-18 10:22:01,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:01,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:22:01,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:01,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:22:01,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:22:01,295 INFO L87 Difference]: Start difference. First operand 20160 states and 23303 transitions. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 3 states have internal predecessors, (279), 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) [2024-11-18 10:22:02,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:02,175 INFO L93 Difference]: Finished difference Result 44218 states and 51655 transitions. [2024-11-18 10:22:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:22:02,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 3 states have internal predecessors, (279), 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 359 [2024-11-18 10:22:02,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:02,272 INFO L225 Difference]: With dead ends: 44218 [2024-11-18 10:22:02,272 INFO L226 Difference]: Without dead ends: 26086 [2024-11-18 10:22:02,280 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 [2024-11-18 10:22:02,281 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 259 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:02,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 102 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:22:02,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26086 states. [2024-11-18 10:22:02,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26086 to 22201. [2024-11-18 10:22:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22201 states, 22200 states have (on average 1.1554054054054055) internal successors, (25650), 22200 states have internal predecessors, (25650), 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) [2024-11-18 10:22:02,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22201 states to 22201 states and 25650 transitions. [2024-11-18 10:22:02,485 INFO L78 Accepts]: Start accepts. Automaton has 22201 states and 25650 transitions. Word has length 359 [2024-11-18 10:22:02,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:02,486 INFO L471 AbstractCegarLoop]: Abstraction has 22201 states and 25650 transitions. [2024-11-18 10:22:02,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 3 states have internal predecessors, (279), 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) [2024-11-18 10:22:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand 22201 states and 25650 transitions. [2024-11-18 10:22:02,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-18 10:22:02,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:02,495 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:02,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 10:22:02,496 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:02,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:02,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1694407671, now seen corresponding path program 1 times [2024-11-18 10:22:02,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:02,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363187440] [2024-11-18 10:22:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:02,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-18 10:22:03,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:03,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363187440] [2024-11-18 10:22:03,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363187440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:03,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395105560] [2024-11-18 10:22:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:03,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:03,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:03,210 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) [2024-11-18 10:22:03,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 10:22:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:03,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:22:03,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-18 10:22:03,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:22:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-18 10:22:07,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395105560] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:07,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:22:07,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-18 10:22:07,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8350486] [2024-11-18 10:22:07,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:07,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:22:07,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:07,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:22:07,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:07,152 INFO L87 Difference]: Start difference. First operand 22201 states and 25650 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:22:08,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:08,333 INFO L93 Difference]: Finished difference Result 50703 states and 59095 transitions. [2024-11-18 10:22:08,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:22:08,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 360 [2024-11-18 10:22:08,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:08,363 INFO L225 Difference]: With dead ends: 50703 [2024-11-18 10:22:08,364 INFO L226 Difference]: Without dead ends: 30530 [2024-11-18 10:22:08,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 716 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:08,375 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 313 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:08,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 179 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:22:08,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30530 states. [2024-11-18 10:22:08,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30530 to 22753. [2024-11-18 10:22:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22753 states, 22752 states have (on average 1.1521184950773558) internal successors, (26213), 22752 states have internal predecessors, (26213), 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) [2024-11-18 10:22:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22753 states to 22753 states and 26213 transitions. [2024-11-18 10:22:08,594 INFO L78 Accepts]: Start accepts. Automaton has 22753 states and 26213 transitions. Word has length 360 [2024-11-18 10:22:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:08,594 INFO L471 AbstractCegarLoop]: Abstraction has 22753 states and 26213 transitions. [2024-11-18 10:22:08,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:22:08,595 INFO L276 IsEmpty]: Start isEmpty. Operand 22753 states and 26213 transitions. [2024-11-18 10:22:08,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-11-18 10:22:08,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:08,606 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:08,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 10:22:08,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:08,807 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:08,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:08,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1780645049, now seen corresponding path program 1 times [2024-11-18 10:22:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:08,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287721378] [2024-11-18 10:22:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:08,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-18 10:22:09,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:09,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287721378] [2024-11-18 10:22:09,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287721378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:09,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:09,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:09,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091188589] [2024-11-18 10:22:09,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:09,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:09,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:09,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:09,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:09,150 INFO L87 Difference]: Start difference. First operand 22753 states and 26213 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2024-11-18 10:22:09,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:09,789 INFO L93 Difference]: Finished difference Result 44958 states and 51822 transitions. [2024-11-18 10:22:09,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:09,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 430 [2024-11-18 10:22:09,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:09,819 INFO L225 Difference]: With dead ends: 44958 [2024-11-18 10:22:09,819 INFO L226 Difference]: Without dead ends: 24233 [2024-11-18 10:22:09,836 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 [2024-11-18 10:22:09,837 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 141 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:09,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 144 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:22:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24233 states. [2024-11-18 10:22:10,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24233 to 22755. [2024-11-18 10:22:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22755 states, 22754 states have (on average 1.1518414344730596) internal successors, (26209), 22754 states have internal predecessors, (26209), 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) [2024-11-18 10:22:10,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22755 states to 22755 states and 26209 transitions. [2024-11-18 10:22:10,146 INFO L78 Accepts]: Start accepts. Automaton has 22755 states and 26209 transitions. Word has length 430 [2024-11-18 10:22:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:10,146 INFO L471 AbstractCegarLoop]: Abstraction has 22755 states and 26209 transitions. [2024-11-18 10:22:10,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2024-11-18 10:22:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 22755 states and 26209 transitions. [2024-11-18 10:22:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-11-18 10:22:10,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:10,162 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:10,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:22:10,162 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:10,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:10,163 INFO L85 PathProgramCache]: Analyzing trace with hash 767467316, now seen corresponding path program 1 times [2024-11-18 10:22:10,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:10,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267352877] [2024-11-18 10:22:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:10,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 487 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-18 10:22:10,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:10,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267352877] [2024-11-18 10:22:10,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267352877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:10,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:10,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572935470] [2024-11-18 10:22:10,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:10,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:10,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:10,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:10,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:10,399 INFO L87 Difference]: Start difference. First operand 22755 states and 26209 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2024-11-18 10:22:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:10,927 INFO L93 Difference]: Finished difference Result 42206 states and 48741 transitions. [2024-11-18 10:22:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 433 [2024-11-18 10:22:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:10,948 INFO L225 Difference]: With dead ends: 42206 [2024-11-18 10:22:10,948 INFO L226 Difference]: Without dead ends: 21479 [2024-11-18 10:22:10,963 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 [2024-11-18 10:22:10,964 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 137 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:10,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 334 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:10,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21479 states. [2024-11-18 10:22:11,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21479 to 21461. [2024-11-18 10:22:11,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21461 states, 21460 states have (on average 1.1256756756756756) internal successors, (24157), 21460 states have internal predecessors, (24157), 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) [2024-11-18 10:22:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21461 states to 21461 states and 24157 transitions. [2024-11-18 10:22:11,148 INFO L78 Accepts]: Start accepts. Automaton has 21461 states and 24157 transitions. Word has length 433 [2024-11-18 10:22:11,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:11,148 INFO L471 AbstractCegarLoop]: Abstraction has 21461 states and 24157 transitions. [2024-11-18 10:22:11,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2024-11-18 10:22:11,148 INFO L276 IsEmpty]: Start isEmpty. Operand 21461 states and 24157 transitions. [2024-11-18 10:22:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-18 10:22:11,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:11,195 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, 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, 2, 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] [2024-11-18 10:22:11,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 10:22:11,195 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:11,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1966731224, now seen corresponding path program 1 times [2024-11-18 10:22:11,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:11,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864124829] [2024-11-18 10:22:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:11,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-18 10:22:11,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:11,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864124829] [2024-11-18 10:22:11,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864124829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:11,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:11,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:22:11,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696832375] [2024-11-18 10:22:11,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:11,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:11,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:11,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:11,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:11,375 INFO L87 Difference]: Start difference. First operand 21461 states and 24157 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 2 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) [2024-11-18 10:22:11,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:11,684 INFO L93 Difference]: Finished difference Result 40143 states and 45235 transitions. [2024-11-18 10:22:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:11,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 2 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 437 [2024-11-18 10:22:11,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:11,703 INFO L225 Difference]: With dead ends: 40143 [2024-11-18 10:22:11,703 INFO L226 Difference]: Without dead ends: 20710 [2024-11-18 10:22:11,714 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 [2024-11-18 10:22:11,714 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 189 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:11,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 40 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 10:22:11,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20710 states. [2024-11-18 10:22:11,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20710 to 20701. [2024-11-18 10:22:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20701 states, 20700 states have (on average 1.123864734299517) internal successors, (23264), 20700 states have internal predecessors, (23264), 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) [2024-11-18 10:22:11,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20701 states to 20701 states and 23264 transitions. [2024-11-18 10:22:11,876 INFO L78 Accepts]: Start accepts. Automaton has 20701 states and 23264 transitions. Word has length 437 [2024-11-18 10:22:11,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:11,877 INFO L471 AbstractCegarLoop]: Abstraction has 20701 states and 23264 transitions. [2024-11-18 10:22:11,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 2 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) [2024-11-18 10:22:11,877 INFO L276 IsEmpty]: Start isEmpty. Operand 20701 states and 23264 transitions. [2024-11-18 10:22:11,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-18 10:22:11,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:11,885 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, 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, 2, 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] [2024-11-18 10:22:11,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 10:22:11,886 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:11,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:11,886 INFO L85 PathProgramCache]: Analyzing trace with hash 753967230, now seen corresponding path program 1 times [2024-11-18 10:22:11,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:11,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44438559] [2024-11-18 10:22:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:11,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-18 10:22:12,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:12,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44438559] [2024-11-18 10:22:12,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44438559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:12,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:12,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:12,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59999534] [2024-11-18 10:22:12,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:12,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:12,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:12,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:12,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:12,038 INFO L87 Difference]: Start difference. First operand 20701 states and 23264 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2024-11-18 10:22:12,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:12,498 INFO L93 Difference]: Finished difference Result 36034 states and 40329 transitions. [2024-11-18 10:22:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:12,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 453 [2024-11-18 10:22:12,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:12,514 INFO L225 Difference]: With dead ends: 36034 [2024-11-18 10:22:12,514 INFO L226 Difference]: Without dead ends: 17175 [2024-11-18 10:22:12,525 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 [2024-11-18 10:22:12,526 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 135 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:12,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 135 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17175 states. [2024-11-18 10:22:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17175 to 16991. [2024-11-18 10:22:12,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16991 states, 16990 states have (on average 1.1065921130076515) internal successors, (18801), 16990 states have internal predecessors, (18801), 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) [2024-11-18 10:22:12,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16991 states to 16991 states and 18801 transitions. [2024-11-18 10:22:12,662 INFO L78 Accepts]: Start accepts. Automaton has 16991 states and 18801 transitions. Word has length 453 [2024-11-18 10:22:12,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:12,663 INFO L471 AbstractCegarLoop]: Abstraction has 16991 states and 18801 transitions. [2024-11-18 10:22:12,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2024-11-18 10:22:12,663 INFO L276 IsEmpty]: Start isEmpty. Operand 16991 states and 18801 transitions. [2024-11-18 10:22:12,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2024-11-18 10:22:12,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:12,702 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:12,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 10:22:12,702 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:12,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:12,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1527728535, now seen corresponding path program 1 times [2024-11-18 10:22:12,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:12,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843595734] [2024-11-18 10:22:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:12,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-18 10:22:13,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:13,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843595734] [2024-11-18 10:22:13,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843595734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:13,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:13,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:22:13,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343001274] [2024-11-18 10:22:13,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:13,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 10:22:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 10:22:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:22:13,167 INFO L87 Difference]: Start difference. First operand 16991 states and 18801 transitions. Second operand has 5 states, 5 states have (on average 73.6) internal successors, (368), 4 states have internal predecessors, (368), 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) [2024-11-18 10:22:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:13,880 INFO L93 Difference]: Finished difference Result 32217 states and 35694 transitions. [2024-11-18 10:22:13,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 10:22:13,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 4 states have internal predecessors, (368), 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 491 [2024-11-18 10:22:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:13,896 INFO L225 Difference]: With dead ends: 32217 [2024-11-18 10:22:13,896 INFO L226 Difference]: Without dead ends: 17254 [2024-11-18 10:22:13,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:22:13,907 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 268 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:13,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 55 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:22:13,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17254 states. [2024-11-18 10:22:14,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17254 to 17176. [2024-11-18 10:22:14,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17176 states, 17175 states have (on average 1.1050946142649198) internal successors, (18980), 17175 states have internal predecessors, (18980), 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) [2024-11-18 10:22:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17176 states to 17176 states and 18980 transitions. [2024-11-18 10:22:14,050 INFO L78 Accepts]: Start accepts. Automaton has 17176 states and 18980 transitions. Word has length 491 [2024-11-18 10:22:14,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:14,051 INFO L471 AbstractCegarLoop]: Abstraction has 17176 states and 18980 transitions. [2024-11-18 10:22:14,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 4 states have internal predecessors, (368), 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) [2024-11-18 10:22:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 17176 states and 18980 transitions. [2024-11-18 10:22:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2024-11-18 10:22:14,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:14,061 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:14,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 10:22:14,062 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:14,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash 762254319, now seen corresponding path program 1 times [2024-11-18 10:22:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:14,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106663641] [2024-11-18 10:22:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:14,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 685 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-18 10:22:14,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:14,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106663641] [2024-11-18 10:22:14,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106663641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:14,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:14,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:14,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321443650] [2024-11-18 10:22:14,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:14,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:14,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:14,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:14,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:14,344 INFO L87 Difference]: Start difference. First operand 17176 states and 18980 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:22:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:14,804 INFO L93 Difference]: Finished difference Result 34902 states and 38588 transitions. [2024-11-18 10:22:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:14,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 513 [2024-11-18 10:22:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:14,822 INFO L225 Difference]: With dead ends: 34902 [2024-11-18 10:22:14,822 INFO L226 Difference]: Without dead ends: 18832 [2024-11-18 10:22:14,833 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 [2024-11-18 10:22:14,834 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 63 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:14,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 368 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:14,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18832 states. [2024-11-18 10:22:14,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18832 to 17912. [2024-11-18 10:22:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17912 states, 17911 states have (on average 1.1027859974317458) internal successors, (19752), 17911 states have internal predecessors, (19752), 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) [2024-11-18 10:22:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17912 states to 17912 states and 19752 transitions. [2024-11-18 10:22:14,987 INFO L78 Accepts]: Start accepts. Automaton has 17912 states and 19752 transitions. Word has length 513 [2024-11-18 10:22:14,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:14,988 INFO L471 AbstractCegarLoop]: Abstraction has 17912 states and 19752 transitions. [2024-11-18 10:22:14,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:22:14,988 INFO L276 IsEmpty]: Start isEmpty. Operand 17912 states and 19752 transitions. [2024-11-18 10:22:15,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2024-11-18 10:22:15,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:15,000 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, 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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:15,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 10:22:15,000 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:15,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:15,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1316469261, now seen corresponding path program 1 times [2024-11-18 10:22:15,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:15,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114965066] [2024-11-18 10:22:15,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:15,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-18 10:22:15,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:15,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114965066] [2024-11-18 10:22:15,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114965066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:15,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:15,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:15,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393334198] [2024-11-18 10:22:15,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:15,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:15,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:15,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:15,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:15,312 INFO L87 Difference]: Start difference. First operand 17912 states and 19752 transitions. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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) [2024-11-18 10:22:15,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:15,933 INFO L93 Difference]: Finished difference Result 37482 states and 41348 transitions. [2024-11-18 10:22:15,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:15,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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 545 [2024-11-18 10:22:15,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:15,949 INFO L225 Difference]: With dead ends: 37482 [2024-11-18 10:22:15,949 INFO L226 Difference]: Without dead ends: 20676 [2024-11-18 10:22:15,958 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 [2024-11-18 10:22:15,958 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 55 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:15,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 64 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:22:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20676 states. [2024-11-18 10:22:16,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20676 to 18096. [2024-11-18 10:22:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18096 states, 18095 states have (on average 1.102072395689417) internal successors, (19942), 18095 states have internal predecessors, (19942), 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) [2024-11-18 10:22:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18096 states to 18096 states and 19942 transitions. [2024-11-18 10:22:16,187 INFO L78 Accepts]: Start accepts. Automaton has 18096 states and 19942 transitions. Word has length 545 [2024-11-18 10:22:16,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:16,188 INFO L471 AbstractCegarLoop]: Abstraction has 18096 states and 19942 transitions. [2024-11-18 10:22:16,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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) [2024-11-18 10:22:16,188 INFO L276 IsEmpty]: Start isEmpty. Operand 18096 states and 19942 transitions. [2024-11-18 10:22:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2024-11-18 10:22:16,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:16,204 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:16,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 10:22:16,204 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:16,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:16,205 INFO L85 PathProgramCache]: Analyzing trace with hash 50467656, now seen corresponding path program 1 times [2024-11-18 10:22:16,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:16,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74604485] [2024-11-18 10:22:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:16,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-18 10:22:17,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:17,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74604485] [2024-11-18 10:22:17,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74604485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:17,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:17,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 10:22:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507950273] [2024-11-18 10:22:17,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:17,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 10:22:17,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 10:22:17,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:22:17,156 INFO L87 Difference]: Start difference. First operand 18096 states and 19942 transitions. Second operand has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 6 states have internal predecessors, (404), 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) [2024-11-18 10:22:18,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:18,121 INFO L93 Difference]: Finished difference Result 36747 states and 40475 transitions. [2024-11-18 10:22:18,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 10:22:18,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 6 states have internal predecessors, (404), 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 555 [2024-11-18 10:22:18,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:18,139 INFO L225 Difference]: With dead ends: 36747 [2024-11-18 10:22:18,139 INFO L226 Difference]: Without dead ends: 21047 [2024-11-18 10:22:18,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:22:18,149 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 274 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:18,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 207 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:22:18,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21047 states. [2024-11-18 10:22:18,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21047 to 18648. [2024-11-18 10:22:18,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18648 states, 18647 states have (on average 1.1025902289912586) internal successors, (20560), 18647 states have internal predecessors, (20560), 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) [2024-11-18 10:22:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18648 states to 18648 states and 20560 transitions. [2024-11-18 10:22:18,310 INFO L78 Accepts]: Start accepts. Automaton has 18648 states and 20560 transitions. Word has length 555 [2024-11-18 10:22:18,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:18,310 INFO L471 AbstractCegarLoop]: Abstraction has 18648 states and 20560 transitions. [2024-11-18 10:22:18,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 6 states have internal predecessors, (404), 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) [2024-11-18 10:22:18,310 INFO L276 IsEmpty]: Start isEmpty. Operand 18648 states and 20560 transitions. [2024-11-18 10:22:18,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2024-11-18 10:22:18,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:18,321 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:18,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 10:22:18,322 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:18,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash -304859615, now seen corresponding path program 1 times [2024-11-18 10:22:18,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:18,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449667544] [2024-11-18 10:22:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:18,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 665 proven. 8 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-18 10:22:19,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:19,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449667544] [2024-11-18 10:22:19,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449667544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:19,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736324321] [2024-11-18 10:22:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:19,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:19,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:19,147 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) [2024-11-18 10:22:19,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 10:22:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:19,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:22:19,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 311 proven. 447 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-18 10:22:19,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:22:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 758 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-18 10:22:19,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736324321] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:19,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:22:19,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 12 [2024-11-18 10:22:19,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046234058] [2024-11-18 10:22:19,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:19,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:22:19,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:19,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:22:19,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-18 10:22:19,866 INFO L87 Difference]: Start difference. First operand 18648 states and 20560 transitions. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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) [2024-11-18 10:22:20,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:20,794 INFO L93 Difference]: Finished difference Result 40794 states and 45019 transitions. [2024-11-18 10:22:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:22:20,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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 565 [2024-11-18 10:22:20,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:20,821 INFO L225 Difference]: With dead ends: 40794 [2024-11-18 10:22:20,821 INFO L226 Difference]: Without dead ends: 24542 [2024-11-18 10:22:20,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 1125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-18 10:22:20,836 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 227 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:20,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 55 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:22:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24542 states. [2024-11-18 10:22:20,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24542 to 19369. [2024-11-18 10:22:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19369 states, 19368 states have (on average 1.1001652209830648) internal successors, (21308), 19368 states have internal predecessors, (21308), 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) [2024-11-18 10:22:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19369 states to 19369 states and 21308 transitions. [2024-11-18 10:22:21,021 INFO L78 Accepts]: Start accepts. Automaton has 19369 states and 21308 transitions. Word has length 565 [2024-11-18 10:22:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:21,021 INFO L471 AbstractCegarLoop]: Abstraction has 19369 states and 21308 transitions. [2024-11-18 10:22:21,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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) [2024-11-18 10:22:21,022 INFO L276 IsEmpty]: Start isEmpty. Operand 19369 states and 21308 transitions. [2024-11-18 10:22:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2024-11-18 10:22:21,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:21,035 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:21,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 10:22:21,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:21,236 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:21,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:21,236 INFO L85 PathProgramCache]: Analyzing trace with hash 967909587, now seen corresponding path program 1 times [2024-11-18 10:22:21,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:21,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671893279] [2024-11-18 10:22:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:21,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 1174 proven. 0 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2024-11-18 10:22:21,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:21,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671893279] [2024-11-18 10:22:21,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671893279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:21,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:21,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368481191] [2024-11-18 10:22:21,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:21,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:21,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:21,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:21,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:21,620 INFO L87 Difference]: Start difference. First operand 19369 states and 21308 transitions. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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) [2024-11-18 10:22:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:22,190 INFO L93 Difference]: Finished difference Result 40036 states and 44096 transitions. [2024-11-18 10:22:22,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:22,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 778 [2024-11-18 10:22:22,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:22,212 INFO L225 Difference]: With dead ends: 40036 [2024-11-18 10:22:22,212 INFO L226 Difference]: Without dead ends: 22325 [2024-11-18 10:22:22,226 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 [2024-11-18 10:22:22,227 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 103 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:22,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 167 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:22:22,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22325 states. [2024-11-18 10:22:22,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22325 to 21209. [2024-11-18 10:22:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21209 states, 21208 states have (on average 1.0917578272350057) internal successors, (23154), 21208 states have internal predecessors, (23154), 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) [2024-11-18 10:22:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21209 states to 21209 states and 23154 transitions. [2024-11-18 10:22:22,419 INFO L78 Accepts]: Start accepts. Automaton has 21209 states and 23154 transitions. Word has length 778 [2024-11-18 10:22:22,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:22,420 INFO L471 AbstractCegarLoop]: Abstraction has 21209 states and 23154 transitions. [2024-11-18 10:22:22,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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) [2024-11-18 10:22:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 21209 states and 23154 transitions. [2024-11-18 10:22:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2024-11-18 10:22:22,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:22,436 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 10:22:22,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 10:22:22,436 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:22,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1055284622, now seen corresponding path program 1 times [2024-11-18 10:22:22,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:22,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824188839] [2024-11-18 10:22:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:22,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 1500 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-18 10:22:23,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:23,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824188839] [2024-11-18 10:22:23,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824188839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:23,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:23,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:22:23,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625812392] [2024-11-18 10:22:23,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:23,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:22:23,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:23,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:22:23,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:22:23,144 INFO L87 Difference]: Start difference. First operand 21209 states and 23154 transitions. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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) [2024-11-18 10:22:24,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:24,064 INFO L93 Difference]: Finished difference Result 46296 states and 50516 transitions. [2024-11-18 10:22:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:22:24,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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 779 [2024-11-18 10:22:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:24,089 INFO L225 Difference]: With dead ends: 46296 [2024-11-18 10:22:24,089 INFO L226 Difference]: Without dead ends: 27297 [2024-11-18 10:22:24,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:22:24,103 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 244 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:24,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 67 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:22:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27297 states. [2024-11-18 10:22:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27297 to 21957. [2024-11-18 10:22:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21957 states, 21956 states have (on average 1.090408088905083) internal successors, (23941), 21956 states have internal predecessors, (23941), 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) [2024-11-18 10:22:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21957 states to 21957 states and 23941 transitions. [2024-11-18 10:22:24,306 INFO L78 Accepts]: Start accepts. Automaton has 21957 states and 23941 transitions. Word has length 779 [2024-11-18 10:22:24,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:24,307 INFO L471 AbstractCegarLoop]: Abstraction has 21957 states and 23941 transitions. [2024-11-18 10:22:24,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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) [2024-11-18 10:22:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 21957 states and 23941 transitions. [2024-11-18 10:22:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2024-11-18 10:22:24,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:24,323 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:24,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 10:22:24,323 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:24,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash 754659544, now seen corresponding path program 1 times [2024-11-18 10:22:24,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:24,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624305018] [2024-11-18 10:22:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:24,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1895 backedges. 1572 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2024-11-18 10:22:24,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:24,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624305018] [2024-11-18 10:22:24,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624305018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:24,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:24,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:22:24,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554213170] [2024-11-18 10:22:24,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:24,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:22:24,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:24,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:22:24,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:22:24,967 INFO L87 Difference]: Start difference. First operand 21957 states and 23941 transitions. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 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) [2024-11-18 10:22:25,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:25,787 INFO L93 Difference]: Finished difference Result 47056 states and 51274 transitions. [2024-11-18 10:22:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:22:25,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 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 826 [2024-11-18 10:22:25,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:25,808 INFO L225 Difference]: With dead ends: 47056 [2024-11-18 10:22:25,808 INFO L226 Difference]: Without dead ends: 25101 [2024-11-18 10:22:25,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:22:25,820 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 244 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:25,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 72 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:22:25,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25101 states. [2024-11-18 10:22:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25101 to 16609. [2024-11-18 10:22:25,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16609 states, 16608 states have (on average 1.0930274566473988) internal successors, (18153), 16608 states have internal predecessors, (18153), 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) [2024-11-18 10:22:25,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16609 states to 16609 states and 18153 transitions. [2024-11-18 10:22:25,996 INFO L78 Accepts]: Start accepts. Automaton has 16609 states and 18153 transitions. Word has length 826 [2024-11-18 10:22:25,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:25,996 INFO L471 AbstractCegarLoop]: Abstraction has 16609 states and 18153 transitions. [2024-11-18 10:22:25,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 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) [2024-11-18 10:22:25,997 INFO L276 IsEmpty]: Start isEmpty. Operand 16609 states and 18153 transitions. [2024-11-18 10:22:26,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2024-11-18 10:22:26,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:26,010 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:26,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 10:22:26,010 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:26,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:26,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1645325847, now seen corresponding path program 1 times [2024-11-18 10:22:26,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:26,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414056305] [2024-11-18 10:22:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:26,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:26,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2571 backedges. 1734 proven. 0 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2024-11-18 10:22:26,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:26,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414056305] [2024-11-18 10:22:26,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414056305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:26,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:26,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:26,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202928091] [2024-11-18 10:22:26,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:26,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:26,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:26,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:26,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:26,277 INFO L87 Difference]: Start difference. First operand 16609 states and 18153 transitions. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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) [2024-11-18 10:22:26,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:26,847 INFO L93 Difference]: Finished difference Result 33952 states and 37066 transitions. [2024-11-18 10:22:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:26,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 920 [2024-11-18 10:22:26,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:26,869 INFO L225 Difference]: With dead ends: 33952 [2024-11-18 10:22:26,869 INFO L226 Difference]: Without dead ends: 17345 [2024-11-18 10:22:26,880 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 [2024-11-18 10:22:26,880 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 132 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:26,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 100 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:22:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17345 states. [2024-11-18 10:22:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17345 to 15317. [2024-11-18 10:22:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15317 states, 15316 states have (on average 1.0920605902324367) internal successors, (16726), 15316 states have internal predecessors, (16726), 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) [2024-11-18 10:22:27,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15317 states to 15317 states and 16726 transitions. [2024-11-18 10:22:27,020 INFO L78 Accepts]: Start accepts. Automaton has 15317 states and 16726 transitions. Word has length 920 [2024-11-18 10:22:27,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:27,020 INFO L471 AbstractCegarLoop]: Abstraction has 15317 states and 16726 transitions. [2024-11-18 10:22:27,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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) [2024-11-18 10:22:27,021 INFO L276 IsEmpty]: Start isEmpty. Operand 15317 states and 16726 transitions. [2024-11-18 10:22:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2024-11-18 10:22:27,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:27,037 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:27,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 10:22:27,037 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:27,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:27,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1307367328, now seen corresponding path program 1 times [2024-11-18 10:22:27,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:27,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317531206] [2024-11-18 10:22:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:27,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:28,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3347 backedges. 1791 proven. 969 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2024-11-18 10:22:28,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:28,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317531206] [2024-11-18 10:22:28,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317531206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:28,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657902155] [2024-11-18 10:22:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:28,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:28,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:28,589 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) [2024-11-18 10:22:28,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 10:22:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:28,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:22:28,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3347 backedges. 1949 proven. 0 refuted. 0 times theorem prover too weak. 1398 trivial. 0 not checked. [2024-11-18 10:22:28,996 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:22:28,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657902155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:28,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:22:28,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-18 10:22:28,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133020291] [2024-11-18 10:22:28,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:28,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:28,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:28,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:28,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:22:28,998 INFO L87 Difference]: Start difference. First operand 15317 states and 16726 transitions. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2024-11-18 10:22:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:29,443 INFO L93 Difference]: Finished difference Result 31007 states and 33853 transitions. [2024-11-18 10:22:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:29,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 1070 [2024-11-18 10:22:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:29,458 INFO L225 Difference]: With dead ends: 31007 [2024-11-18 10:22:29,458 INFO L226 Difference]: Without dead ends: 15692 [2024-11-18 10:22:29,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1077 GetRequests, 1071 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:22:29,468 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 104 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:29,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 333 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:29,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15692 states. [2024-11-18 10:22:29,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15692 to 15317. [2024-11-18 10:22:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15317 states, 15316 states have (on average 1.0905588926612693) internal successors, (16703), 15316 states have internal predecessors, (16703), 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) [2024-11-18 10:22:29,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15317 states to 15317 states and 16703 transitions. [2024-11-18 10:22:29,604 INFO L78 Accepts]: Start accepts. Automaton has 15317 states and 16703 transitions. Word has length 1070 [2024-11-18 10:22:29,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:29,604 INFO L471 AbstractCegarLoop]: Abstraction has 15317 states and 16703 transitions. [2024-11-18 10:22:29,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2024-11-18 10:22:29,605 INFO L276 IsEmpty]: Start isEmpty. Operand 15317 states and 16703 transitions. [2024-11-18 10:22:29,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2024-11-18 10:22:29,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:29,620 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, 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, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-11-18 10:22:29,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 10:22:29,820 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,SelfDestructingSolverStorable26 [2024-11-18 10:22:29,820 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:29,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:29,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1750744226, now seen corresponding path program 1 times [2024-11-18 10:22:29,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:29,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341427651] [2024-11-18 10:22:29,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:29,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:30,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4031 backedges. 2183 proven. 0 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2024-11-18 10:22:30,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:30,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341427651] [2024-11-18 10:22:30,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341427651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:30,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:30,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:30,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015744280] [2024-11-18 10:22:30,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:30,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:30,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:30,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:30,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:30,366 INFO L87 Difference]: Start difference. First operand 15317 states and 16703 transitions. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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) [2024-11-18 10:22:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:30,912 INFO L93 Difference]: Finished difference Result 31743 states and 34652 transitions. [2024-11-18 10:22:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:30,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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 1096 [2024-11-18 10:22:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:30,928 INFO L225 Difference]: With dead ends: 31743 [2024-11-18 10:22:30,929 INFO L226 Difference]: Without dead ends: 16428 [2024-11-18 10:22:30,941 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 [2024-11-18 10:22:30,941 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 84 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:30,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 345 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:30,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16428 states. [2024-11-18 10:22:31,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16428 to 16426. [2024-11-18 10:22:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16426 states, 16425 states have (on average 1.0877321156773212) internal successors, (17866), 16425 states have internal predecessors, (17866), 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) [2024-11-18 10:22:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16426 states to 16426 states and 17866 transitions. [2024-11-18 10:22:31,152 INFO L78 Accepts]: Start accepts. Automaton has 16426 states and 17866 transitions. Word has length 1096 [2024-11-18 10:22:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:31,153 INFO L471 AbstractCegarLoop]: Abstraction has 16426 states and 17866 transitions. [2024-11-18 10:22:31,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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) [2024-11-18 10:22:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand 16426 states and 17866 transitions. [2024-11-18 10:22:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1111 [2024-11-18 10:22:31,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:31,177 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, 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, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:31,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 10:22:31,178 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:31,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:31,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1094636434, now seen corresponding path program 1 times [2024-11-18 10:22:31,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:31,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482581414] [2024-11-18 10:22:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:31,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4105 backedges. 2511 proven. 0 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2024-11-18 10:22:31,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:31,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482581414] [2024-11-18 10:22:31,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482581414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:31,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:31,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:31,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796674204] [2024-11-18 10:22:31,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:31,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:31,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:31,856 INFO L87 Difference]: Start difference. First operand 16426 states and 17866 transitions. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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) [2024-11-18 10:22:32,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:32,333 INFO L93 Difference]: Finished difference Result 33770 states and 36704 transitions. [2024-11-18 10:22:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:32,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 1110 [2024-11-18 10:22:32,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:32,348 INFO L225 Difference]: With dead ends: 33770 [2024-11-18 10:22:32,348 INFO L226 Difference]: Without dead ends: 17162 [2024-11-18 10:22:32,359 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 [2024-11-18 10:22:32,359 INFO L432 NwaCegarLoop]: 329 mSDtfsCounter, 101 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:32,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 348 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17162 states. [2024-11-18 10:22:32,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17162 to 15690. [2024-11-18 10:22:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15690 states, 15689 states have (on average 1.085091465357894) internal successors, (17024), 15689 states have internal predecessors, (17024), 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) [2024-11-18 10:22:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15690 states to 15690 states and 17024 transitions. [2024-11-18 10:22:32,490 INFO L78 Accepts]: Start accepts. Automaton has 15690 states and 17024 transitions. Word has length 1110 [2024-11-18 10:22:32,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:32,491 INFO L471 AbstractCegarLoop]: Abstraction has 15690 states and 17024 transitions. [2024-11-18 10:22:32,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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) [2024-11-18 10:22:32,491 INFO L276 IsEmpty]: Start isEmpty. Operand 15690 states and 17024 transitions. [2024-11-18 10:22:32,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1184 [2024-11-18 10:22:32,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:32,505 INFO L215 NwaCegarLoop]: trace histogram [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, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:32,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 10:22:32,505 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:32,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:32,506 INFO L85 PathProgramCache]: Analyzing trace with hash -659694717, now seen corresponding path program 1 times [2024-11-18 10:22:32,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:32,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752155653] [2024-11-18 10:22:32,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:32,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4814 backedges. 3060 proven. 810 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2024-11-18 10:22:35,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:35,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752155653] [2024-11-18 10:22:35,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752155653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:35,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730464458] [2024-11-18 10:22:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:35,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:35,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:35,081 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) [2024-11-18 10:22:35,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 10:22:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:35,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:22:35,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4814 backedges. 3002 proven. 0 refuted. 0 times theorem prover too weak. 1812 trivial. 0 not checked. [2024-11-18 10:22:35,519 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:22:35,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730464458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:35,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:22:35,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2024-11-18 10:22:35,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123422314] [2024-11-18 10:22:35,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:35,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:35,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:35,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:35,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-18 10:22:35,522 INFO L87 Difference]: Start difference. First operand 15690 states and 17024 transitions. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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) [2024-11-18 10:22:35,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:35,904 INFO L93 Difference]: Finished difference Result 25285 states and 27359 transitions. [2024-11-18 10:22:35,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:35,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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 1183 [2024-11-18 10:22:35,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:35,906 INFO L225 Difference]: With dead ends: 25285 [2024-11-18 10:22:35,906 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 10:22:35,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1185 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-18 10:22:35,915 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 98 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:35,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 278 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 10:22:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 10:22:35,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 10:22:35,916 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) [2024-11-18 10:22:35,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 10:22:35,917 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1183 [2024-11-18 10:22:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:35,917 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 10:22:35,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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) [2024-11-18 10:22:35,917 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 10:22:35,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 10:22:35,919 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 10:22:35,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 10:22:36,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:36,123 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, 1, 1, 1, 1, 1] [2024-11-18 10:22:36,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 10:22:41,564 WARN L286 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 619 DAG size of output: 744 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-18 10:22:44,015 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 10:22:44,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:22:44 BoogieIcfgContainer [2024-11-18 10:22:44,041 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 10:22:44,041 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 10:22:44,041 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 10:22:44,041 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 10:22:44,042 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:21:43" (3/4) ... [2024-11-18 10:22:44,044 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 10:22:44,058 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-18 10:22:44,059 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 10:22:44,060 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 10:22:44,061 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 10:22:44,202 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 10:22:44,203 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 10:22:44,203 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 10:22:44,203 INFO L158 Benchmark]: Toolchain (without parser) took 62652.32ms. Allocated memory was 176.2MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 141.5MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 939.2MB. Max. memory is 16.1GB. [2024-11-18 10:22:44,203 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 10:22:44,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.13ms. Allocated memory is still 176.2MB. Free memory was 141.5MB in the beginning and 138.4MB in the end (delta: 3.1MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-11-18 10:22:44,204 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.46ms. Allocated memory is still 176.2MB. Free memory was 138.4MB in the beginning and 120.7MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-18 10:22:44,204 INFO L158 Benchmark]: Boogie Preprocessor took 145.46ms. Allocated memory is still 176.2MB. Free memory was 120.7MB in the beginning and 95.4MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-18 10:22:44,204 INFO L158 Benchmark]: RCFGBuilder took 1317.81ms. Allocated memory was 176.2MB in the beginning and 234.9MB in the end (delta: 58.7MB). Free memory was 95.4MB in the beginning and 137.7MB in the end (delta: -42.3MB). Peak memory consumption was 63.2MB. Max. memory is 16.1GB. [2024-11-18 10:22:44,204 INFO L158 Benchmark]: TraceAbstraction took 60323.61ms. Allocated memory was 234.9MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 137.7MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-11-18 10:22:44,204 INFO L158 Benchmark]: Witness Printer took 161.46ms. Allocated memory is still 2.4GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-18 10:22:44,205 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 123.7MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.13ms. Allocated memory is still 176.2MB. Free memory was 141.5MB in the beginning and 138.4MB in the end (delta: 3.1MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.46ms. Allocated memory is still 176.2MB. Free memory was 138.4MB in the beginning and 120.7MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 145.46ms. Allocated memory is still 176.2MB. Free memory was 120.7MB in the beginning and 95.4MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1317.81ms. Allocated memory was 176.2MB in the beginning and 234.9MB in the end (delta: 58.7MB). Free memory was 95.4MB in the beginning and 137.7MB in the end (delta: -42.3MB). Peak memory consumption was 63.2MB. Max. memory is 16.1GB. * TraceAbstraction took 60323.61ms. Allocated memory was 234.9MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 137.7MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 161.46ms. Allocated memory is still 2.4GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. 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: 181]: 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, 283 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.3s, OverallIterations: 30, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5625 SdHoareTripleChecker+Valid, 18.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5625 mSDsluCounter, 5797 SdHoareTripleChecker+Invalid, 15.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 790 mSDsCounter, 3354 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23250 IncrementalHoareTripleChecker+Invalid, 26604 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3354 mSolverCounterUnsat, 5007 mSDtfsCounter, 23250 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5122 GetRequests, 5034 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22755occurred in iteration=14, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 30 MinimizatonAttempts, 46770 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 20.8s InterpolantComputationTime, 19226 NumberOfCodeBlocks, 19226 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 20441 ConstructedInterpolants, 0 QuantifiedInterpolants, 77879 SizeOfPredicates, 8 NumberOfNonLiveVariables, 4820 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 39 InterpolantComputations, 29 PerfectInterpolantSequences, 41315/43902 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: 1044]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((long long) a23 + 43) <= 0) && (a4 == 0)) && (((long long) a29 + 554036) <= 0)) && (a25 == 9)) && (a3 == 1)) && (a8 == 15)) || (((((a25 <= 10) && (a3 == 1)) && (a4 == 1)) && (a23 <= 312)) && (a8 == 15))) || ((((((a23 <= 600000) && (a25 <= 10)) && (141 <= a29)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || ((((((((long long) a23 + 55) <= 0) && (a25 == 12)) && (a4 == 0)) && (((long long) a29 + 554036) <= 0)) && (a3 == 1)) && (a8 == 15))) || ((((((a25 == 12) && (139 <= a23)) && (a3 == 1)) && (a4 == 1)) && (a23 <= 312)) && (a8 == 15))) || ((((((a25 == 13) && (a23 <= 599997)) && (307 <= a23)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || ((((((a29 <= 275) && (a25 == 12)) && (a4 == 0)) && (141 <= a29)) && (a3 == 1)) && (a8 == 15))) || (((((((a29 <= 275) && (141 <= a29)) && (a3 == 1)) && (a4 == 1)) && (312 <= a23)) && (a25 <= 9)) && (a8 == 15))) || (((((a23 <= 599997) && (a3 == 1)) && (a4 == 1)) && (a8 == 15)) && (a25 == 10))) || (((((((a25 == 13) && (((long long) a23 + 43) <= 0)) && (a29 <= 274)) && (141 <= a29)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || ((((((((long long) a23 + 43) <= 0) && (a4 == 0)) && (a25 == 11)) && (a3 == 1)) && (a29 <= 220)) && (a8 == 15))) || ((((((a23 <= 600000) && (a25 == 11)) && (141 <= a29)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || ((((((a29 <= 245) && (141 <= a29)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15)) && (a25 == 10))) || (((((((a23 <= 600000) && (a25 == 12)) && (307 <= a23)) && (141 <= a29)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || (((((((a25 == 13) && (a29 <= 245)) && (141 <= a29)) && (a3 == 1)) && (a4 == 1)) && (312 <= a23)) && (a8 == 15))) || ((((((((long long) a23 + 55) <= 0) && (a4 == 0)) && (a3 == 1)) && (a29 <= 220)) && (a8 == 15)) && (a25 == 10))) || ((((((a25 == 11) && (a29 <= 274)) && (141 <= a29)) && (((long long) 119992 + a23) <= 0)) && (a4 == 1)) && (a8 == 15))) || ((((((a25 == 13) && (141 <= a29)) && (a3 == 1)) && (((long long) a23 + 599772) <= 0)) && (a4 == 1)) && (a8 == 15))) || ((((((a25 == 13) && (a29 <= 240)) && (141 <= a29)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || ((((((((a29 <= 275) && (141 <= a29)) && (a3 == 1)) && (a4 == 1)) && (a23 <= 600261)) && (312 <= a23)) && (a8 == 15)) && (a25 == 10))) || (((((((a25 == 12) && (a23 <= 599997)) && (a3 == 1)) && (a4 == 1)) && (312 <= a23)) && (a8 == 15)) && (a29 <= 130))) || ((((((a25 == 13) && (139 <= a23)) && (a3 == 1)) && (a4 == 1)) && (a23 <= 312)) && (a8 == 15))) || ((((((((long long) a23 + 43) <= 0) && (a4 == 0)) && (141 <= a29)) && (a25 == 9)) && (a3 == 1)) && (a8 == 15))) RESULT: Ultimate proved your program to be correct! [2024-11-18 10:22:44,228 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