./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem10_label44.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/Problem10_label44.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 e65715203b5986c0877aee121b02f1098e69f701c6bd353eab2daeab84d5a285 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:20:17,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:20:17,117 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:20:17,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:20:17,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:20:17,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:20:17,154 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:20:17,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:20:17,155 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:20:17,160 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:20:17,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:20:17,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:20:17,161 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:20:17,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:20:17,162 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:20:17,162 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:20:17,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:20:17,163 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:20:17,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:20:17,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:20:17,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:20:17,166 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:20:17,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:20:17,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:20:17,167 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:20:17,167 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:20:17,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:20:17,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:20:17,169 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:20:17,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:20:17,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:20:17,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:20:17,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:20:17,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:20:17,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:20:17,171 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:20:17,172 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:20:17,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:20:17,173 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:20:17,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:20:17,173 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:20:17,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:20:17,174 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e65715203b5986c0877aee121b02f1098e69f701c6bd353eab2daeab84d5a285 [2024-11-18 10:20:17,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:20:17,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:20:17,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:20:17,500 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:20:17,500 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:20:17,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem10_label44.c [2024-11-18 10:20:19,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:20:19,814 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:20:19,815 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem10_label44.c [2024-11-18 10:20:19,851 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/653970b4a/e1ef7e0db92b427f9f641d8e56d03ac7/FLAG10a832d62 [2024-11-18 10:20:20,387 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/653970b4a/e1ef7e0db92b427f9f641d8e56d03ac7 [2024-11-18 10:20:20,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:20:20,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:20:20,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:20:20,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:20:20,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:20:20,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:20:20" (1/1) ... [2024-11-18 10:20:20,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a578af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:20, skipping insertion in model container [2024-11-18 10:20:20,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:20:20" (1/1) ... [2024-11-18 10:20:20,492 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:20:20,966 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/Problem10_label44.c[6569,6582] [2024-11-18 10:20:21,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:20:21,269 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:20:21,321 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/Problem10_label44.c[6569,6582] [2024-11-18 10:20:21,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:20:21,411 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:20:21,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21 WrapperNode [2024-11-18 10:20:21,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:20:21,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:20:21,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:20:21,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:20:21,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (1/1) ... [2024-11-18 10:20:21,438 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (1/1) ... [2024-11-18 10:20:21,507 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 598 [2024-11-18 10:20:21,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:20:21,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:20:21,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:20:21,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:20:21,519 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (1/1) ... [2024-11-18 10:20:21,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (1/1) ... [2024-11-18 10:20:21,527 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (1/1) ... [2024-11-18 10:20:21,555 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 10:20:21,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (1/1) ... [2024-11-18 10:20:21,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (1/1) ... [2024-11-18 10:20:21,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (1/1) ... [2024-11-18 10:20:21,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (1/1) ... [2024-11-18 10:20:21,602 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (1/1) ... [2024-11-18 10:20:21,608 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (1/1) ... [2024-11-18 10:20:21,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:20:21,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:20:21,617 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:20:21,617 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:20:21,618 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (1/1) ... [2024-11-18 10:20:21,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:20:21,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:20:21,654 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 10:20:21,663 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 10:20:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:20:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:20:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:20:21,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:20:21,755 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:20:21,757 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:20:22,689 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-18 10:20:22,690 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:20:22,714 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:20:22,714 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:20:22,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:20:22 BoogieIcfgContainer [2024-11-18 10:20:22,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:20:22,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:20:22,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:20:22,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:20:22,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:20:20" (1/3) ... [2024-11-18 10:20:22,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3b74f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:20:22, skipping insertion in model container [2024-11-18 10:20:22,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:21" (2/3) ... [2024-11-18 10:20:22,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3b74f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:20:22, skipping insertion in model container [2024-11-18 10:20:22,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:20:22" (3/3) ... [2024-11-18 10:20:22,725 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2024-11-18 10:20:22,742 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:20:22,743 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:20:22,824 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:20:22,829 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;@794fdff1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:20:22,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:20:22,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 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 10:20:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 10:20:22,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:20:22,842 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:20:22,842 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:20:22,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:20:22,846 INFO L85 PathProgramCache]: Analyzing trace with hash -66916295, now seen corresponding path program 1 times [2024-11-18 10:20:22,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:20:22,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696257831] [2024-11-18 10:20:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:22,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:20:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:23,195 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 10:20:23,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:20:23,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696257831] [2024-11-18 10:20:23,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696257831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:20:23,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:20:23,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:20:23,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763721154] [2024-11-18 10:20:23,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:20:23,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:20:23,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:20:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:20:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:20:23,223 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 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 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:20:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:20:23,928 INFO L93 Difference]: Finished difference Result 552 states and 966 transitions. [2024-11-18 10:20:23,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:20:23,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-18 10:20:23,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:20:23,939 INFO L225 Difference]: With dead ends: 552 [2024-11-18 10:20:23,940 INFO L226 Difference]: Without dead ends: 282 [2024-11-18 10:20:23,942 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 10:20:23,945 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 106 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:20:23,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 120 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:20:23,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-18 10:20:23,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2024-11-18 10:20:23,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.3416370106761566) internal successors, (377), 281 states have internal predecessors, (377), 0 states have call successors, (0), 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 10:20:23,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 377 transitions. [2024-11-18 10:20:23,986 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 377 transitions. Word has length 57 [2024-11-18 10:20:23,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:20:23,986 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 377 transitions. [2024-11-18 10:20:23,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:20:23,987 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 377 transitions. [2024-11-18 10:20:23,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 10:20:23,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:20:23,990 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:20:23,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:20:23,990 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:20:23,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:20:23,991 INFO L85 PathProgramCache]: Analyzing trace with hash -803354708, now seen corresponding path program 1 times [2024-11-18 10:20:23,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:20:23,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919060124] [2024-11-18 10:20:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:23,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:20:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:20:24,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:20:24,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919060124] [2024-11-18 10:20:24,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919060124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:20:24,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:20:24,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:20:24,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987312401] [2024-11-18 10:20:24,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:20:24,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:20:24,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:20:24,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:20:24,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:20:24,180 INFO L87 Difference]: Start difference. First operand 282 states and 377 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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 10:20:24,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:20:24,580 INFO L93 Difference]: Finished difference Result 701 states and 967 transitions. [2024-11-18 10:20:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:20:24,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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 10:20:24,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:20:24,586 INFO L225 Difference]: With dead ends: 701 [2024-11-18 10:20:24,586 INFO L226 Difference]: Without dead ends: 421 [2024-11-18 10:20:24,586 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 10:20:24,592 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 89 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:20:24,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 215 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:20:24,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-18 10:20:24,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2024-11-18 10:20:24,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.2523809523809524) internal successors, (526), 420 states have internal predecessors, (526), 0 states have call successors, (0), 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 10:20:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 526 transitions. [2024-11-18 10:20:24,634 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 526 transitions. Word has length 123 [2024-11-18 10:20:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:20:24,638 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 526 transitions. [2024-11-18 10:20:24,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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 10:20:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 526 transitions. [2024-11-18 10:20:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 10:20:24,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:20:24,648 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, 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] [2024-11-18 10:20:24,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:20:24,649 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:20:24,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:20:24,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1231336677, now seen corresponding path program 1 times [2024-11-18 10:20:24,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:20:24,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871189537] [2024-11-18 10:20:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:24,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:20:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:20:24,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:20:24,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871189537] [2024-11-18 10:20:24,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871189537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:20:24,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:20:24,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:20:24,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418758670] [2024-11-18 10:20:24,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:20:24,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:20:24,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:20:24,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:20:24,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:20:24,919 INFO L87 Difference]: Start difference. First operand 421 states and 526 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 10:20:25,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:20:25,279 INFO L93 Difference]: Finished difference Result 979 states and 1209 transitions. [2024-11-18 10:20:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:20:25,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2024-11-18 10:20:25,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:20:25,282 INFO L225 Difference]: With dead ends: 979 [2024-11-18 10:20:25,282 INFO L226 Difference]: Without dead ends: 560 [2024-11-18 10:20:25,283 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 10:20:25,284 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 68 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:20:25,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 77 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 10:20:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-18 10:20:25,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-18 10:20:25,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.2075134168157424) internal successors, (675), 559 states have internal predecessors, (675), 0 states have call successors, (0), 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 10:20:25,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 675 transitions. [2024-11-18 10:20:25,296 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 675 transitions. Word has length 130 [2024-11-18 10:20:25,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:20:25,297 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 675 transitions. [2024-11-18 10:20:25,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 10:20:25,297 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 675 transitions. [2024-11-18 10:20:25,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-18 10:20:25,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:20:25,299 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:20:25,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:20:25,299 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:20:25,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:20:25,300 INFO L85 PathProgramCache]: Analyzing trace with hash 920423616, now seen corresponding path program 1 times [2024-11-18 10:20:25,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:20:25,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210005408] [2024-11-18 10:20:25,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:25,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:20:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:20:25,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:20:25,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210005408] [2024-11-18 10:20:25,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210005408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:20:25,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:20:25,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:20:25,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232037473] [2024-11-18 10:20:25,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:20:25,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:20:25,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:20:25,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:20:25,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:20:25,648 INFO L87 Difference]: Start difference. First operand 560 states and 675 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 10:20:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:20:26,314 INFO L93 Difference]: Finished difference Result 1417 states and 1742 transitions. [2024-11-18 10:20:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:20:26,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2024-11-18 10:20:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:20:26,317 INFO L225 Difference]: With dead ends: 1417 [2024-11-18 10:20:26,317 INFO L226 Difference]: Without dead ends: 979 [2024-11-18 10:20:26,318 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 10:20:26,319 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 77 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:20:26,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 39 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:20:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2024-11-18 10:20:26,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 977. [2024-11-18 10:20:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.2243852459016393) internal successors, (1195), 976 states have internal predecessors, (1195), 0 states have call successors, (0), 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 10:20:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1195 transitions. [2024-11-18 10:20:26,348 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1195 transitions. Word has length 132 [2024-11-18 10:20:26,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:20:26,349 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1195 transitions. [2024-11-18 10:20:26,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 10:20:26,349 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1195 transitions. [2024-11-18 10:20:26,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-18 10:20:26,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:20:26,354 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, 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 10:20:26,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:20:26,354 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:20:26,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:20:26,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1786628584, now seen corresponding path program 1 times [2024-11-18 10:20:26,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:20:26,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89906446] [2024-11-18 10:20:26,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:26,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:20:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:20:26,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:20:26,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89906446] [2024-11-18 10:20:26,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89906446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:20:26,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:20:26,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:20:26,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505533130] [2024-11-18 10:20:26,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:20:26,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:20:26,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:20:26,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:20:26,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:20:26,473 INFO L87 Difference]: Start difference. First operand 977 states and 1195 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 10:20:26,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:20:26,880 INFO L93 Difference]: Finished difference Result 2230 states and 2828 transitions. [2024-11-18 10:20:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:20:26,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2024-11-18 10:20:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:20:26,885 INFO L225 Difference]: With dead ends: 2230 [2024-11-18 10:20:26,885 INFO L226 Difference]: Without dead ends: 1394 [2024-11-18 10:20:26,886 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 10:20:26,887 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 87 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:20:26,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 34 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:20:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2024-11-18 10:20:26,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1394. [2024-11-18 10:20:26,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 1.2261306532663316) internal successors, (1708), 1393 states have internal predecessors, (1708), 0 states have call successors, (0), 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 10:20:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1708 transitions. [2024-11-18 10:20:26,914 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1708 transitions. Word has length 148 [2024-11-18 10:20:26,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:20:26,914 INFO L471 AbstractCegarLoop]: Abstraction has 1394 states and 1708 transitions. [2024-11-18 10:20:26,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 10:20:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1708 transitions. [2024-11-18 10:20:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 10:20:26,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:20:26,916 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:20:26,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:20:26,917 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:20:26,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:20:26,918 INFO L85 PathProgramCache]: Analyzing trace with hash 493047386, now seen corresponding path program 1 times [2024-11-18 10:20:26,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:20:26,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496714586] [2024-11-18 10:20:26,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:26,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:20:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 10:20:27,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:20:27,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496714586] [2024-11-18 10:20:27,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496714586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:20:27,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762475731] [2024-11-18 10:20:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:27,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:20:27,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:20:27,159 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 10:20:27,160 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 10:20:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:27,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:20:27,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:20:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 10:20:27,591 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:20:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762475731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:20:27,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:20:27,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-18 10:20:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433548216] [2024-11-18 10:20:27,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:20:27,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:20:27,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:20:27,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:20:27,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:20:27,593 INFO L87 Difference]: Start difference. First operand 1394 states and 1708 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:20:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:20:27,974 INFO L93 Difference]: Finished difference Result 2230 states and 2683 transitions. [2024-11-18 10:20:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:20:27,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2024-11-18 10:20:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:20:27,983 INFO L225 Difference]: With dead ends: 2230 [2024-11-18 10:20:27,985 INFO L226 Difference]: Without dead ends: 2228 [2024-11-18 10:20:27,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:20:27,986 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 69 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:20:27,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 11 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:20:27,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2024-11-18 10:20:28,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 1672. [2024-11-18 10:20:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1671 states have (on average 1.24655894673848) internal successors, (2083), 1671 states have internal predecessors, (2083), 0 states have call successors, (0), 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 10:20:28,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2083 transitions. [2024-11-18 10:20:28,043 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2083 transitions. Word has length 168 [2024-11-18 10:20:28,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:20:28,044 INFO L471 AbstractCegarLoop]: Abstraction has 1672 states and 2083 transitions. [2024-11-18 10:20:28,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:20:28,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2083 transitions. [2024-11-18 10:20:28,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-18 10:20:28,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:20:28,048 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, 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] [2024-11-18 10:20:28,063 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 10:20:28,248 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 10:20:28,248 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:20:28,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:20:28,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1329719851, now seen corresponding path program 1 times [2024-11-18 10:20:28,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:20:28,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075586499] [2024-11-18 10:20:28,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:28,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:20:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:20:28,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:20:28,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075586499] [2024-11-18 10:20:28,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075586499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:20:28,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:20:28,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:20:28,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254367128] [2024-11-18 10:20:28,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:20:28,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:20:28,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:20:28,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:20:28,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:20:28,453 INFO L87 Difference]: Start difference. First operand 1672 states and 2083 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 10:20:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:20:28,862 INFO L93 Difference]: Finished difference Result 3759 states and 4777 transitions. [2024-11-18 10:20:28,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:20:28,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 246 [2024-11-18 10:20:28,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:20:28,868 INFO L225 Difference]: With dead ends: 3759 [2024-11-18 10:20:28,869 INFO L226 Difference]: Without dead ends: 2228 [2024-11-18 10:20:28,870 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 10:20:28,872 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:20:28,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 189 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:20:28,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2024-11-18 10:20:28,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 1811. [2024-11-18 10:20:28,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 1.181767955801105) internal successors, (2139), 1810 states have internal predecessors, (2139), 0 states have call successors, (0), 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 10:20:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2139 transitions. [2024-11-18 10:20:28,900 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2139 transitions. Word has length 246 [2024-11-18 10:20:28,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:20:28,901 INFO L471 AbstractCegarLoop]: Abstraction has 1811 states and 2139 transitions. [2024-11-18 10:20:28,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 10:20:28,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2139 transitions. [2024-11-18 10:20:28,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-18 10:20:28,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:20:28,904 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, 4, 4, 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] [2024-11-18 10:20:28,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:20:28,905 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:20:28,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:20:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash 527075250, now seen corresponding path program 1 times [2024-11-18 10:20:28,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:20:28,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927005966] [2024-11-18 10:20:28,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:28,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:20:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 285 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:20:29,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:20:29,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927005966] [2024-11-18 10:20:29,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927005966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:20:29,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169261545] [2024-11-18 10:20:29,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:29,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:20:29,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:20:29,515 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 10:20:29,521 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 10:20:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:29,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 10:20:29,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:20:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 125 proven. 179 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-18 10:20:30,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:20:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 125 proven. 179 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-18 10:20:32,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169261545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:20:32,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:20:32,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-18 10:20:32,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229253995] [2024-11-18 10:20:32,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:20:32,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 10:20:32,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:20:32,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 10:20:32,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-18 10:20:32,829 INFO L87 Difference]: Start difference. First operand 1811 states and 2139 transitions. Second operand has 12 states, 12 states have (on average 46.916666666666664) internal successors, (563), 11 states have internal predecessors, (563), 0 states have call successors, (0), 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 10:20:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:20:37,392 INFO L93 Difference]: Finished difference Result 7158 states and 8365 transitions. [2024-11-18 10:20:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 10:20:37,393 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 46.916666666666664) internal successors, (563), 11 states have internal predecessors, (563), 0 states have call successors, (0), 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 280 [2024-11-18 10:20:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:20:37,424 INFO L225 Difference]: With dead ends: 7158 [2024-11-18 10:20:37,424 INFO L226 Difference]: Without dead ends: 5488 [2024-11-18 10:20:37,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2024-11-18 10:20:37,436 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 2246 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 4381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:20:37,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 77 Invalid, 4381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 3507 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-18 10:20:37,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2024-11-18 10:20:37,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 3062. [2024-11-18 10:20:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 3061 states have (on average 1.160078405749755) internal successors, (3551), 3061 states have internal predecessors, (3551), 0 states have call successors, (0), 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 10:20:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 3551 transitions. [2024-11-18 10:20:37,576 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 3551 transitions. Word has length 280 [2024-11-18 10:20:37,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:20:37,576 INFO L471 AbstractCegarLoop]: Abstraction has 3062 states and 3551 transitions. [2024-11-18 10:20:37,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 46.916666666666664) internal successors, (563), 11 states have internal predecessors, (563), 0 states have call successors, (0), 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 10:20:37,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 3551 transitions. [2024-11-18 10:20:37,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-11-18 10:20:37,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:20:37,587 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:37,614 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 10:20:37,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-18 10:20:37,792 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:20:37,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:20:37,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1406584506, now seen corresponding path program 1 times [2024-11-18 10:20:37,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:20:37,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904404968] [2024-11-18 10:20:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:37,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:20:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 77 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:20:38,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:20:38,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904404968] [2024-11-18 10:20:38,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904404968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:20:38,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079008194] [2024-11-18 10:20:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:38,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:20:38,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:20:38,296 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 10:20:38,297 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 10:20:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:38,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:20:38,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:20:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-18 10:20:38,652 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:20:38,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079008194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:20:38,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:20:38,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 10:20:38,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787968182] [2024-11-18 10:20:38,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:20:38,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:20:38,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:20:38,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:20:38,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:20:38,654 INFO L87 Difference]: Start difference. First operand 3062 states and 3551 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:20:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:20:39,722 INFO L93 Difference]: Finished difference Result 6539 states and 7682 transitions. [2024-11-18 10:20:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:20:39,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2024-11-18 10:20:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:20:39,733 INFO L225 Difference]: With dead ends: 6539 [2024-11-18 10:20:39,734 INFO L226 Difference]: Without dead ends: 3618 [2024-11-18 10:20:39,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:20:39,740 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 85 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:20:39,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 226 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:20:39,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2024-11-18 10:20:39,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 3201. [2024-11-18 10:20:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3200 states have (on average 1.145) internal successors, (3664), 3200 states have internal predecessors, (3664), 0 states have call successors, (0), 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 10:20:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 3664 transitions. [2024-11-18 10:20:39,817 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 3664 transitions. Word has length 305 [2024-11-18 10:20:39,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:20:39,818 INFO L471 AbstractCegarLoop]: Abstraction has 3201 states and 3664 transitions. [2024-11-18 10:20:39,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:20:39,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 3664 transitions. [2024-11-18 10:20:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-18 10:20:39,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:20:39,825 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, 4, 4, 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] [2024-11-18 10:20:39,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 10:20:40,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:20:40,027 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:20:40,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:20:40,027 INFO L85 PathProgramCache]: Analyzing trace with hash -725494293, now seen corresponding path program 1 times [2024-11-18 10:20:40,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:20:40,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737564552] [2024-11-18 10:20:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:40,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:20:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-18 10:20:40,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:20:40,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737564552] [2024-11-18 10:20:40,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737564552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:20:40,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:20:40,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:20:40,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260042758] [2024-11-18 10:20:40,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:20:40,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:20:40,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:20:40,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:20:40,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:20:40,177 INFO L87 Difference]: Start difference. First operand 3201 states and 3664 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 10:20:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:20:40,534 INFO L93 Difference]: Finished difference Result 6122 states and 7034 transitions. [2024-11-18 10:20:40,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:20:40,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 319 [2024-11-18 10:20:40,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:20:40,541 INFO L225 Difference]: With dead ends: 6122 [2024-11-18 10:20:40,541 INFO L226 Difference]: Without dead ends: 3062 [2024-11-18 10:20:40,543 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 10:20:40,543 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 63 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:20:40,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 216 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 10:20:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2024-11-18 10:20:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 2784. [2024-11-18 10:20:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2783 states have (on average 1.0984549047790155) internal successors, (3057), 2783 states have internal predecessors, (3057), 0 states have call successors, (0), 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 10:20:40,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 3057 transitions. [2024-11-18 10:20:40,569 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 3057 transitions. Word has length 319 [2024-11-18 10:20:40,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:20:40,570 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 3057 transitions. [2024-11-18 10:20:40,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 10:20:40,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 3057 transitions. [2024-11-18 10:20:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-18 10:20:40,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:20:40,574 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, 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, 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 10:20:40,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:20:40,574 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:20:40,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:20:40,574 INFO L85 PathProgramCache]: Analyzing trace with hash 784405412, now seen corresponding path program 1 times [2024-11-18 10:20:40,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:20:40,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649423930] [2024-11-18 10:20:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:20:40,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:20:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:20:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-18 10:20:40,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:20:40,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649423930] [2024-11-18 10:20:40,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649423930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:20:40,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:20:40,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:20:40,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049042075] [2024-11-18 10:20:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:20:40,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:20:40,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:20:40,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:20:40,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:20:40,709 INFO L87 Difference]: Start difference. First operand 2784 states and 3057 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 10:20:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:20:41,044 INFO L93 Difference]: Finished difference Result 6259 states and 6872 transitions. [2024-11-18 10:20:41,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:20:41,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 10:20:41,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:20:41,046 INFO L225 Difference]: With dead ends: 6259 [2024-11-18 10:20:41,046 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 10:20:41,049 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 10:20:41,049 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 85 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:20:41,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 223 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 10:20:41,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 10:20:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 10:20:41,050 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 10:20:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 10:20:41,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 329 [2024-11-18 10:20:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:20:41,051 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 10:20:41,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 10:20:41,051 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 10:20:41,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 10:20:41,053 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 10:20:41,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 10:20:41,055 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:20:41,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 10:20:41,631 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 10:20:41,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:20:41 BoogieIcfgContainer [2024-11-18 10:20:41,653 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 10:20:41,653 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 10:20:41,653 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 10:20:41,653 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 10:20:41,654 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:20:22" (3/4) ... [2024-11-18 10:20:41,656 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 10:20:41,670 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-18 10:20:41,670 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 10:20:41,671 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 10:20:41,671 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 10:20:41,783 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 10:20:41,783 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 10:20:41,783 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 10:20:41,783 INFO L158 Benchmark]: Toolchain (without parser) took 21391.41ms. Allocated memory was 180.4MB in the beginning and 469.8MB in the end (delta: 289.4MB). Free memory was 108.8MB in the beginning and 417.4MB in the end (delta: -308.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 10:20:41,784 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 180.4MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 10:20:41,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1013.87ms. Allocated memory is still 180.4MB. Free memory was 108.6MB in the beginning and 138.9MB in the end (delta: -30.3MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2024-11-18 10:20:41,784 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.10ms. Allocated memory is still 180.4MB. Free memory was 138.9MB in the beginning and 130.7MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-18 10:20:41,784 INFO L158 Benchmark]: Boogie Preprocessor took 105.03ms. Allocated memory is still 180.4MB. Free memory was 130.7MB in the beginning and 121.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-18 10:20:41,784 INFO L158 Benchmark]: RCFGBuilder took 1098.06ms. Allocated memory is still 180.4MB. Free memory was 120.2MB in the beginning and 120.7MB in the end (delta: -493.9kB). Peak memory consumption was 75.9MB. Max. memory is 16.1GB. [2024-11-18 10:20:41,785 INFO L158 Benchmark]: TraceAbstraction took 18936.26ms. Allocated memory was 180.4MB in the beginning and 469.8MB in the end (delta: 289.4MB). Free memory was 119.7MB in the beginning and 428.9MB in the end (delta: -309.2MB). Peak memory consumption was 255.1MB. Max. memory is 16.1GB. [2024-11-18 10:20:41,785 INFO L158 Benchmark]: Witness Printer took 129.80ms. Allocated memory is still 469.8MB. Free memory was 428.9MB in the beginning and 417.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 10:20:41,786 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 180.4MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1013.87ms. Allocated memory is still 180.4MB. Free memory was 108.6MB in the beginning and 138.9MB in the end (delta: -30.3MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.10ms. Allocated memory is still 180.4MB. Free memory was 138.9MB in the beginning and 130.7MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 105.03ms. Allocated memory is still 180.4MB. Free memory was 130.7MB in the beginning and 121.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1098.06ms. Allocated memory is still 180.4MB. Free memory was 120.2MB in the beginning and 120.7MB in the end (delta: -493.9kB). Peak memory consumption was 75.9MB. Max. memory is 16.1GB. * TraceAbstraction took 18936.26ms. Allocated memory was 180.4MB in the beginning and 469.8MB in the end (delta: 289.4MB). Free memory was 119.7MB in the beginning and 428.9MB in the end (delta: -309.2MB). Peak memory consumption was 255.1MB. Max. memory is 16.1GB. * Witness Printer took 129.80ms. Allocated memory is still 469.8MB. Free memory was 428.9MB in the beginning and 417.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. 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: 185]: 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, 206 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.3s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3052 SdHoareTripleChecker+Valid, 8.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3052 mSDsluCounter, 1427 SdHoareTripleChecker+Invalid, 7.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 116 mSDsCounter, 1516 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7390 IncrementalHoareTripleChecker+Invalid, 8906 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1516 mSolverCounterUnsat, 1311 mSDtfsCounter, 7390 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1078 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3201occurred in iteration=9, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 4096 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 2990 NumberOfCodeBlocks, 2990 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3255 ConstructedInterpolants, 0 QuantifiedInterpolants, 15800 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1064 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 15 InterpolantComputations, 10 PerfectInterpolantSequences, 2212/2842 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: 592]: Loop Invariant Derived loop invariant: ((((((((((((((a19 == 9) && (14 == a4)) && ((0 < (331463 + ((a1 >= 0) ? (a1 / 5) : ((a1 / 5) - 1)))) || (((a1 >= 0) ? (a1 % 5) : ((a1 % 5) + 5)) != 0))) && (0 <= (331463 + ((a1 >= 0) ? (a1 / 5) : ((a1 / 5) - 1))))) && (a12 == 0)) || ((((a10 == 1) && ((0 < (331463 + ((a1 >= 0) ? (a1 / 5) : ((a1 / 5) - 1)))) || (((a1 >= 0) ? (a1 % 5) : ((a1 % 5) + 5)) != 0))) && (0 <= (331463 + ((a1 >= 0) ? (a1 / 5) : ((a1 / 5) - 1))))) && (9 <= a19))) || ((((a19 == 9) && (14 == a4)) && (a10 == 2)) && (a12 == 0))) || ((((a10 == 0) && (a19 == 9)) && (14 == a4)) && (a12 == 0))) || ((((a19 <= 9) && (a10 == 2)) && ((0 < (331463 + ((a1 >= 0) ? (a1 / 5) : ((a1 / 5) - 1)))) || (((a1 >= 0) ? (a1 % 5) : ((a1 % 5) + 5)) != 0))) && (0 <= (331463 + ((a1 >= 0) ? (a1 / 5) : ((a1 / 5) - 1)))))) || (((a10 <= 0) && ((0 < (331463 + ((a1 >= 0) ? (a1 / 5) : ((a1 / 5) - 1)))) || (((a1 >= 0) ? (a1 % 5) : ((a1 % 5) + 5)) != 0))) && (0 <= (331463 + ((a1 >= 0) ? (a1 / 5) : ((a1 / 5) - 1)))))) || (((((a19 <= 9) && (0 <= ((long long) a1 + 12))) && (a10 == 3)) && (14 == a4)) && (a12 == 0))) || ((((a19 <= 9) && (4 <= a10)) && ((0 < (331463 + ((a1 >= 0) ? (a1 / 5) : ((a1 / 5) - 1)))) || (((a1 >= 0) ? (a1 % 5) : ((a1 % 5) + 5)) != 0))) && (0 <= (331463 + ((a1 >= 0) ? (a1 / 5) : ((a1 / 5) - 1)))))) || ((((0 <= ((long long) a1 + 12)) && (14 == a4)) && (a19 <= 7)) && (a12 == 0))) || ((((a10 == 1) && (39 <= a1)) && (14 == a4)) && (a12 == 0))) RESULT: Ultimate proved your program to be correct! [2024-11-18 10:20:41,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE