./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init8_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/array-examples/standard_init8_ground-2.i -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 304c65cce38dcde111270a7f4e691d93e4778f0053e0e11304f731e521a0e8b2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:22:36,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:22:36,178 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:22:36,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:22:36,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:22:36,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:22:36,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:22:36,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:22:36,207 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:22:36,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:22:36,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:22:36,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:22:36,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:22:36,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:22:36,210 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:22:36,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:22:36,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:22:36,211 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:22:36,211 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:22:36,211 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:22:36,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:22:36,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:22:36,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:22:36,215 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:22:36,215 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:22:36,215 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:22:36,215 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:22:36,216 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:22:36,216 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:22:36,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:22:36,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:22:36,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:22:36,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:22:36,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:22:36,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:22:36,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:22:36,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:22:36,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:22:36,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:22:36,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:22:36,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:22:36,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:22:36,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 304c65cce38dcde111270a7f4e691d93e4778f0053e0e11304f731e521a0e8b2 [2024-11-16 02:22:36,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:22:36,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:22:36,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:22:36,450 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:22:36,451 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:22:36,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init8_ground-2.i [2024-11-16 02:22:37,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:22:37,954 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:22:37,955 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init8_ground-2.i [2024-11-16 02:22:37,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a0815ce3/9df4013320ad42f8aaa13c914cc860f7/FLAG061d53a84 [2024-11-16 02:22:37,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a0815ce3/9df4013320ad42f8aaa13c914cc860f7 [2024-11-16 02:22:37,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:22:37,975 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:22:37,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:22:37,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:22:37,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:22:37,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:22:37" (1/1) ... [2024-11-16 02:22:37,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e7a2cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:37, skipping insertion in model container [2024-11-16 02:22:37,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:22:37" (1/1) ... [2024-11-16 02:22:37,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:22:38,150 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/array-examples/standard_init8_ground-2.i[816,829] [2024-11-16 02:22:38,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:22:38,186 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:22:38,195 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/array-examples/standard_init8_ground-2.i[816,829] [2024-11-16 02:22:38,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:22:38,231 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:22:38,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38 WrapperNode [2024-11-16 02:22:38,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:22:38,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:22:38,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:22:38,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:22:38,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (1/1) ... [2024-11-16 02:22:38,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (1/1) ... [2024-11-16 02:22:38,257 INFO L138 Inliner]: procedures = 15, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2024-11-16 02:22:38,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:22:38,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:22:38,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:22:38,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:22:38,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (1/1) ... [2024-11-16 02:22:38,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (1/1) ... [2024-11-16 02:22:38,267 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (1/1) ... [2024-11-16 02:22:38,280 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-11-16 02:22:38,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (1/1) ... [2024-11-16 02:22:38,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (1/1) ... [2024-11-16 02:22:38,288 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (1/1) ... [2024-11-16 02:22:38,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (1/1) ... [2024-11-16 02:22:38,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (1/1) ... [2024-11-16 02:22:38,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (1/1) ... [2024-11-16 02:22:38,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:22:38,293 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:22:38,293 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:22:38,293 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:22:38,294 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (1/1) ... [2024-11-16 02:22:38,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:22:38,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:22:38,319 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) [2024-11-16 02:22:38,325 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 [2024-11-16 02:22:38,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:22:38,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:22:38,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:22:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:22:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:22:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:22:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:22:38,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:22:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:22:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:22:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:22:38,406 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:22:38,407 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:22:38,540 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2024-11-16 02:22:38,546 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-16 02:22:38,546 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:22:38,561 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:22:38,561 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:22:38,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:22:38 BoogieIcfgContainer [2024-11-16 02:22:38,562 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:22:38,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:22:38,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:22:38,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:22:38,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:22:37" (1/3) ... [2024-11-16 02:22:38,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223461c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:22:38, skipping insertion in model container [2024-11-16 02:22:38,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:38" (2/3) ... [2024-11-16 02:22:38,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223461c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:22:38, skipping insertion in model container [2024-11-16 02:22:38,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:22:38" (3/3) ... [2024-11-16 02:22:38,571 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-2.i [2024-11-16 02:22:38,584 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:22:38,584 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:22:38,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:22:38,698 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;@68f25787, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:22:38,698 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:22:38,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-16 02:22:38,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:22:38,712 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] [2024-11-16 02:22:38,713 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:22:38,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:22:38,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2121092153, now seen corresponding path program 1 times [2024-11-16 02:22:38,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:22:38,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679791351] [2024-11-16 02:22:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:38,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:22:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:22:38,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:22:38,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679791351] [2024-11-16 02:22:38,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679791351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:22:38,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:22:38,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:22:38,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048892006] [2024-11-16 02:22:38,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:22:38,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:22:38,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:22:38,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:22:38,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:22:38,886 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:38,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:22:38,898 INFO L93 Difference]: Finished difference Result 71 states and 105 transitions. [2024-11-16 02:22:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:22:38,899 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-11-16 02:22:38,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:22:38,904 INFO L225 Difference]: With dead ends: 71 [2024-11-16 02:22:38,905 INFO L226 Difference]: Without dead ends: 33 [2024-11-16 02:22:38,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:22:38,909 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:22:38,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:22:38,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-16 02:22:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-16 02:22:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-11-16 02:22:38,933 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 23 [2024-11-16 02:22:38,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:22:38,933 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-11-16 02:22:38,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-11-16 02:22:38,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-16 02:22:38,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:22:38,934 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] [2024-11-16 02:22:38,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:22:38,935 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:22:38,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:22:38,936 INFO L85 PathProgramCache]: Analyzing trace with hash 585781029, now seen corresponding path program 1 times [2024-11-16 02:22:38,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:22:38,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145864041] [2024-11-16 02:22:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:38,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:22:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:22:39,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:22:39,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145864041] [2024-11-16 02:22:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145864041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:22:39,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:22:39,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:22:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416940439] [2024-11-16 02:22:39,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:22:39,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:22:39,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:22:39,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:22:39,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:22:39,012 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:39,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:22:39,062 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2024-11-16 02:22:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:22:39,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2024-11-16 02:22:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:22:39,064 INFO L225 Difference]: With dead ends: 78 [2024-11-16 02:22:39,064 INFO L226 Difference]: Without dead ends: 49 [2024-11-16 02:22:39,064 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 [2024-11-16 02:22:39,065 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:22:39,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 50 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:22:39,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-16 02:22:39,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-16 02:22:39,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1875) internal successors, (57), 48 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) [2024-11-16 02:22:39,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-11-16 02:22:39,074 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 31 [2024-11-16 02:22:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:22:39,074 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-11-16 02:22:39,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-11-16 02:22:39,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 02:22:39,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:22:39,076 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:22:39,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:22:39,076 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:22:39,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:22:39,077 INFO L85 PathProgramCache]: Analyzing trace with hash 40342565, now seen corresponding path program 1 times [2024-11-16 02:22:39,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:22:39,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059552680] [2024-11-16 02:22:39,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:39,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:22:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:22:39,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:22:39,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059552680] [2024-11-16 02:22:39,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059552680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:22:39,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507398410] [2024-11-16 02:22:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:39,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:22:39,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:22:39,191 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) [2024-11-16 02:22:39,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:22:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:39,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:22:39,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:22:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:22:39,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:22:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:22:39,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507398410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:22:39,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:22:39,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 02:22:39,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556460010] [2024-11-16 02:22:39,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:22:39,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 02:22:39,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:22:39,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 02:22:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:22:39,324 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:39,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:22:39,451 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2024-11-16 02:22:39,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:22:39,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 47 [2024-11-16 02:22:39,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:22:39,455 INFO L225 Difference]: With dead ends: 140 [2024-11-16 02:22:39,455 INFO L226 Difference]: Without dead ends: 97 [2024-11-16 02:22:39,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:22:39,456 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 35 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:22:39,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 100 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:22:39,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-16 02:22:39,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-16 02:22:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.09375) internal successors, (105), 96 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2024-11-16 02:22:39,465 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 47 [2024-11-16 02:22:39,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:22:39,466 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2024-11-16 02:22:39,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:39,466 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2024-11-16 02:22:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 02:22:39,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:22:39,468 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:22:39,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:22:39,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:22:39,669 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:22:39,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:22:39,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1060989147, now seen corresponding path program 2 times [2024-11-16 02:22:39,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:22:39,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333397453] [2024-11-16 02:22:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:39,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:22:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-16 02:22:39,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:22:39,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333397453] [2024-11-16 02:22:39,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333397453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:22:39,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379094092] [2024-11-16 02:22:39,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:22:39,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:22:39,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:22:39,971 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) [2024-11-16 02:22:39,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:22:40,076 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:22:40,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:22:40,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:22:40,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:22:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-16 02:22:40,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:22:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-16 02:22:40,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379094092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:22:40,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:22:40,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 02:22:40,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534924262] [2024-11-16 02:22:40,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:22:40,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 02:22:40,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:22:40,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 02:22:40,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 02:22:40,173 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:22:40,383 INFO L93 Difference]: Finished difference Result 278 states and 341 transitions. [2024-11-16 02:22:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 02:22:40,384 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 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 95 [2024-11-16 02:22:40,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:22:40,385 INFO L225 Difference]: With dead ends: 278 [2024-11-16 02:22:40,388 INFO L226 Difference]: Without dead ends: 193 [2024-11-16 02:22:40,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 02:22:40,389 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 154 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:22:40,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 140 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:22:40,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-16 02:22:40,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-11-16 02:22:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.046875) internal successors, (201), 192 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 201 transitions. [2024-11-16 02:22:40,414 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 201 transitions. Word has length 95 [2024-11-16 02:22:40,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:22:40,414 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 201 transitions. [2024-11-16 02:22:40,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:40,415 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 201 transitions. [2024-11-16 02:22:40,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-16 02:22:40,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:22:40,419 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:22:40,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 02:22:40,620 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,SelfDestructingSolverStorable3 [2024-11-16 02:22:40,621 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:22:40,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:22:40,622 INFO L85 PathProgramCache]: Analyzing trace with hash -693958875, now seen corresponding path program 3 times [2024-11-16 02:22:40,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:22:40,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536949274] [2024-11-16 02:22:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:40,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:22:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-16 02:22:41,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:22:41,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536949274] [2024-11-16 02:22:41,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536949274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:22:41,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813166264] [2024-11-16 02:22:41,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:22:41,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:22:41,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:22:41,102 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) [2024-11-16 02:22:41,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:23:00,593 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-16 02:23:00,594 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:23:00,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 02:23:00,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:23:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-16 02:23:00,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:23:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2024-11-16 02:23:00,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813166264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:23:00,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:23:00,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-16 02:23:00,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794874281] [2024-11-16 02:23:00,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:23:00,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:23:00,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:23:00,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:23:00,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:23:00,862 INFO L87 Difference]: Start difference. First operand 193 states and 201 transitions. Second operand has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:23:01,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:23:01,246 INFO L93 Difference]: Finished difference Result 554 states and 665 transitions. [2024-11-16 02:23:01,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 02:23:01,246 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 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 191 [2024-11-16 02:23:01,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:23:01,248 INFO L225 Difference]: With dead ends: 554 [2024-11-16 02:23:01,252 INFO L226 Difference]: Without dead ends: 385 [2024-11-16 02:23:01,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:23:01,253 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 455 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:23:01,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 244 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:23:01,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-16 02:23:01,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2024-11-16 02:23:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.0234375) internal successors, (393), 384 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:23:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 393 transitions. [2024-11-16 02:23:01,286 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 393 transitions. Word has length 191 [2024-11-16 02:23:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:23:01,287 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 393 transitions. [2024-11-16 02:23:01,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:23:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 393 transitions. [2024-11-16 02:23:01,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-16 02:23:01,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:23:01,297 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:23:01,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 02:23:01,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:23:01,498 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:23:01,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:23:01,499 INFO L85 PathProgramCache]: Analyzing trace with hash -307917019, now seen corresponding path program 4 times [2024-11-16 02:23:01,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:23:01,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890016226] [2024-11-16 02:23:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:23:01,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:23:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:23:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4048 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 3542 trivial. 0 not checked. [2024-11-16 02:23:02,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:23:02,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890016226] [2024-11-16 02:23:02,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890016226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:23:02,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235270903] [2024-11-16 02:23:02,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:23:02,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:23:02,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:23:02,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:23:02,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:23:02,950 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:23:02,950 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:23:02,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 02:23:02,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:23:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4048 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 3542 trivial. 0 not checked. [2024-11-16 02:23:03,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:23:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4048 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 3542 trivial. 0 not checked. [2024-11-16 02:23:03,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235270903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:23:03,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:23:03,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-16 02:23:03,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721908501] [2024-11-16 02:23:03,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:23:03,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 02:23:03,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:23:03,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 02:23:03,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:23:03,814 INFO L87 Difference]: Start difference. First operand 385 states and 393 transitions. Second operand has 49 states, 49 states have (on average 2.693877551020408) internal successors, (132), 49 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) [2024-11-16 02:23:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:23:04,947 INFO L93 Difference]: Finished difference Result 1106 states and 1313 transitions. [2024-11-16 02:23:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-16 02:23:04,948 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.693877551020408) internal successors, (132), 49 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 383 [2024-11-16 02:23:04,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:23:04,951 INFO L225 Difference]: With dead ends: 1106 [2024-11-16 02:23:04,951 INFO L226 Difference]: Without dead ends: 769 [2024-11-16 02:23:04,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:23:04,953 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1043 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1212 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:23:04,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 454 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1212 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 02:23:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-11-16 02:23:04,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2024-11-16 02:23:04,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 1.01171875) internal successors, (777), 768 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:23:04,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 777 transitions. [2024-11-16 02:23:04,970 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 777 transitions. Word has length 383 [2024-11-16 02:23:04,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:23:04,971 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 777 transitions. [2024-11-16 02:23:04,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.693877551020408) internal successors, (132), 49 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) [2024-11-16 02:23:04,971 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 777 transitions. [2024-11-16 02:23:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2024-11-16 02:23:04,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:23:04,980 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:23:04,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:23:05,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:23:05,182 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:23:05,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:23:05,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1718697765, now seen corresponding path program 5 times [2024-11-16 02:23:05,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:23:05,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295212139] [2024-11-16 02:23:05,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:23:05,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:23:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:23:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 17296 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 15134 trivial. 0 not checked. [2024-11-16 02:23:08,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:23:08,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295212139] [2024-11-16 02:23:08,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295212139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:23:08,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632736265] [2024-11-16 02:23:08,529 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:23:08,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:23:08,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:23:08,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:23:08,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process