./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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-industry-pattern/array_single_elem_init.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 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 09:50:33,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 09:50:33,959 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 09:50:33,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 09:50:33,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 09:50:34,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 09:50:34,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 09:50:34,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 09:50:34,007 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 09:50:34,007 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 09:50:34,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 09:50:34,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 09:50:34,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 09:50:34,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 09:50:34,009 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 09:50:34,010 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 09:50:34,010 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 09:50:34,010 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 09:50:34,011 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 09:50:34,011 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 09:50:34,011 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 09:50:34,015 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 09:50:34,016 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 09:50:34,016 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 09:50:34,016 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 09:50:34,016 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 09:50:34,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 09:50:34,017 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 09:50:34,017 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 09:50:34,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 09:50:34,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 09:50:34,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 09:50:34,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:50:34,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 09:50:34,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 09:50:34,019 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 09:50:34,019 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 09:50:34,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 09:50:34,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 09:50:34,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 09:50:34,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 09:50:34,023 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 09:50:34,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 [2024-11-08 09:50:34,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 09:50:34,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 09:50:34,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 09:50:34,346 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 09:50:34,346 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 09:50:34,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2024-11-08 09:50:35,860 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 09:50:36,049 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 09:50:36,050 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2024-11-08 09:50:36,056 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b2a04900/399ae3d8efa24dc1ab9ea96fe91d7154/FLAGd7671f2da [2024-11-08 09:50:36,430 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b2a04900/399ae3d8efa24dc1ab9ea96fe91d7154 [2024-11-08 09:50:36,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 09:50:36,437 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 09:50:36,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 09:50:36,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 09:50:36,445 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 09:50:36,446 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8644cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36, skipping insertion in model container [2024-11-08 09:50:36,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,466 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 09:50:36,642 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-industry-pattern/array_single_elem_init.i[815,828] [2024-11-08 09:50:36,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:50:36,670 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 09:50:36,680 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-industry-pattern/array_single_elem_init.i[815,828] [2024-11-08 09:50:36,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:50:36,706 INFO L204 MainTranslator]: Completed translation [2024-11-08 09:50:36,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36 WrapperNode [2024-11-08 09:50:36,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 09:50:36,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 09:50:36,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 09:50:36,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 09:50:36,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,743 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2024-11-08 09:50:36,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 09:50:36,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 09:50:36,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 09:50:36,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 09:50:36,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,756 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,779 INFO L175 MemorySlicer]: Split 11 memory accesses to 4 slices as follows [2, 4, 2, 3]. 36 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 2]. [2024-11-08 09:50:36,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 09:50:36,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 09:50:36,801 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 09:50:36,801 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 09:50:36,802 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (1/1) ... [2024-11-08 09:50:36,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:50:36,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:36,844 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) [2024-11-08 09:50:36,847 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 [2024-11-08 09:50:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 09:50:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 09:50:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 09:50:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 09:50:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 09:50:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 09:50:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 09:50:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 09:50:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 09:50:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 09:50:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 09:50:36,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 09:50:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 09:50:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 09:50:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 09:50:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 09:50:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 09:50:37,020 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 09:50:37,026 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 09:50:37,254 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-08 09:50:37,254 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 09:50:37,270 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 09:50:37,270 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 09:50:37,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:50:37 BoogieIcfgContainer [2024-11-08 09:50:37,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 09:50:37,274 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 09:50:37,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 09:50:37,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 09:50:37,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 09:50:36" (1/3) ... [2024-11-08 09:50:37,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcaaf14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:50:37, skipping insertion in model container [2024-11-08 09:50:37,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:36" (2/3) ... [2024-11-08 09:50:37,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcaaf14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:50:37, skipping insertion in model container [2024-11-08 09:50:37,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:50:37" (3/3) ... [2024-11-08 09:50:37,281 INFO L112 eAbstractionObserver]: Analyzing ICFG array_single_elem_init.i [2024-11-08 09:50:37,298 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 09:50:37,299 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 09:50:37,363 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 09:50:37,372 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;@5675a34d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 09:50:37,373 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 09:50:37,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:37,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 09:50:37,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:37,385 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:37,385 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:37,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:37,391 INFO L85 PathProgramCache]: Analyzing trace with hash 975548362, now seen corresponding path program 1 times [2024-11-08 09:50:37,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:37,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610507856] [2024-11-08 09:50:37,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:37,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:50:37,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:37,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610507856] [2024-11-08 09:50:37,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610507856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:50:37,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:50:37,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 09:50:37,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577063467] [2024-11-08 09:50:37,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:50:37,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 09:50:37,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:37,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 09:50:37,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 09:50:37,610 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:37,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:37,620 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2024-11-08 09:50:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 09:50:37,622 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-08 09:50:37,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:37,629 INFO L225 Difference]: With dead ends: 33 [2024-11-08 09:50:37,629 INFO L226 Difference]: Without dead ends: 17 [2024-11-08 09:50:37,633 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 [2024-11-08 09:50:37,637 INFO L432 NwaCegarLoop]: 26 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, 26 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 [2024-11-08 09:50:37,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:50:37,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-08 09:50:37,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-08 09:50:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-08 09:50:37,662 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 8 [2024-11-08 09:50:37,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:37,663 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-08 09:50:37,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:37,663 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-11-08 09:50:37,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 09:50:37,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:37,664 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:37,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 09:50:37,665 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:37,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:37,665 INFO L85 PathProgramCache]: Analyzing trace with hash 231190436, now seen corresponding path program 1 times [2024-11-08 09:50:37,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:37,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918252147] [2024-11-08 09:50:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:37,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:50:37,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:37,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918252147] [2024-11-08 09:50:37,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918252147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:50:37,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:50:37,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 09:50:37,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107344275] [2024-11-08 09:50:37,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:50:37,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:50:37,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:37,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:50:37,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:50:37,770 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:37,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:37,822 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-08 09:50:37,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:50:37,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-08 09:50:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:37,827 INFO L225 Difference]: With dead ends: 35 [2024-11-08 09:50:37,827 INFO L226 Difference]: Without dead ends: 27 [2024-11-08 09:50:37,828 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 [2024-11-08 09:50:37,829 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:37,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 20 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:50:37,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-08 09:50:37,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2024-11-08 09:50:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:37,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-08 09:50:37,836 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 8 [2024-11-08 09:50:37,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:37,836 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-08 09:50:37,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-08 09:50:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 09:50:37,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:37,837 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:37,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 09:50:37,838 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:37,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:37,838 INFO L85 PathProgramCache]: Analyzing trace with hash -366620444, now seen corresponding path program 1 times [2024-11-08 09:50:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:37,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641130992] [2024-11-08 09:50:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:37,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:50:38,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:38,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641130992] [2024-11-08 09:50:38,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641130992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:50:38,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:50:38,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 09:50:38,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937703928] [2024-11-08 09:50:38,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:50:38,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:50:38,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:38,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:50:38,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:50:38,082 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:38,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:38,183 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-11-08 09:50:38,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:50:38,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 17 [2024-11-08 09:50:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:38,185 INFO L225 Difference]: With dead ends: 42 [2024-11-08 09:50:38,185 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 09:50:38,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:50:38,187 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:38,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 44 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:50:38,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 09:50:38,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-08 09:50:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-08 09:50:38,197 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2024-11-08 09:50:38,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:38,198 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-08 09:50:38,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-08 09:50:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 09:50:38,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:38,200 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:38,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 09:50:38,200 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:38,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1377737694, now seen corresponding path program 1 times [2024-11-08 09:50:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691922558] [2024-11-08 09:50:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:38,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:50:38,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:38,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691922558] [2024-11-08 09:50:38,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691922558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396548891] [2024-11-08 09:50:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:38,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:38,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:38,323 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) [2024-11-08 09:50:38,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 09:50:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:38,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 09:50:38,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:50:38,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:50:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:50:38,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396548891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:50:38,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:50:38,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 09:50:38,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173440034] [2024-11-08 09:50:38,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:50:38,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 09:50:38,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:38,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 09:50:38,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:50:38,526 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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) [2024-11-08 09:50:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:38,648 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2024-11-08 09:50:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 09:50:38,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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 17 [2024-11-08 09:50:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:38,654 INFO L225 Difference]: With dead ends: 67 [2024-11-08 09:50:38,654 INFO L226 Difference]: Without dead ends: 57 [2024-11-08 09:50:38,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:50:38,656 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:38,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 31 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:50:38,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-08 09:50:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2024-11-08 09:50:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 51 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2024-11-08 09:50:38,672 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 17 [2024-11-08 09:50:38,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:38,673 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2024-11-08 09:50:38,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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) [2024-11-08 09:50:38,673 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2024-11-08 09:50:38,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 09:50:38,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:38,675 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:38,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 09:50:38,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:38,877 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:38,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:38,877 INFO L85 PathProgramCache]: Analyzing trace with hash -912381076, now seen corresponding path program 2 times [2024-11-08 09:50:38,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:38,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954431979] [2024-11-08 09:50:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:38,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 09:50:39,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:39,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954431979] [2024-11-08 09:50:39,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954431979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:39,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097142436] [2024-11-08 09:50:39,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:50:39,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:39,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:39,080 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) [2024-11-08 09:50:39,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 09:50:39,172 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:50:39,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:50:39,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 09:50:39,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 09:50:39,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:50:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 09:50:39,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097142436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:50:39,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:50:39,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-08 09:50:39,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058057847] [2024-11-08 09:50:39,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:50:39,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 09:50:39,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:39,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 09:50:39,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 09:50:39,359 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:39,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:39,541 INFO L93 Difference]: Finished difference Result 142 states and 188 transitions. [2024-11-08 09:50:39,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 09:50:39,541 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 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 38 [2024-11-08 09:50:39,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:39,544 INFO L225 Difference]: With dead ends: 142 [2024-11-08 09:50:39,544 INFO L226 Difference]: Without dead ends: 129 [2024-11-08 09:50:39,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 09:50:39,545 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 155 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:39,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 56 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 09:50:39,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-08 09:50:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2024-11-08 09:50:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.2894736842105263) internal successors, (147), 114 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:39,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 147 transitions. [2024-11-08 09:50:39,557 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 147 transitions. Word has length 38 [2024-11-08 09:50:39,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:39,557 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 147 transitions. [2024-11-08 09:50:39,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:39,558 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 147 transitions. [2024-11-08 09:50:39,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-08 09:50:39,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:39,560 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:39,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 09:50:39,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:39,761 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:39,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:39,761 INFO L85 PathProgramCache]: Analyzing trace with hash 677681824, now seen corresponding path program 3 times [2024-11-08 09:50:39,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:39,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279010783] [2024-11-08 09:50:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:39,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 09:50:40,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:40,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279010783] [2024-11-08 09:50:40,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279010783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:40,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315411810] [2024-11-08 09:50:40,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:50:40,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:40,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:40,056 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) [2024-11-08 09:50:40,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 09:50:40,157 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-08 09:50:40,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:50:40,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 09:50:40,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-08 09:50:40,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:50:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-08 09:50:40,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315411810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:50:40,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:50:40,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 20 [2024-11-08 09:50:40,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390382225] [2024-11-08 09:50:40,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:50:40,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 09:50:40,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 09:50:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2024-11-08 09:50:40,355 INFO L87 Difference]: Start difference. First operand 115 states and 147 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:40,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:40,642 INFO L93 Difference]: Finished difference Result 245 states and 321 transitions. [2024-11-08 09:50:40,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 09:50:40,642 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 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 83 [2024-11-08 09:50:40,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:40,644 INFO L225 Difference]: With dead ends: 245 [2024-11-08 09:50:40,644 INFO L226 Difference]: Without dead ends: 223 [2024-11-08 09:50:40,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2024-11-08 09:50:40,646 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 255 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:40,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 78 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 09:50:40,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-08 09:50:40,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 214. [2024-11-08 09:50:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.2535211267605635) internal successors, (267), 213 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 267 transitions. [2024-11-08 09:50:40,660 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 267 transitions. Word has length 83 [2024-11-08 09:50:40,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:40,660 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 267 transitions. [2024-11-08 09:50:40,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:40,661 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 267 transitions. [2024-11-08 09:50:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 09:50:40,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:40,665 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:40,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 09:50:40,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:40,867 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:40,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:40,868 INFO L85 PathProgramCache]: Analyzing trace with hash -178981630, now seen corresponding path program 4 times [2024-11-08 09:50:40,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:40,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622771545] [2024-11-08 09:50:40,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:40,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:41,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 833 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-11-08 09:50:41,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:41,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622771545] [2024-11-08 09:50:41,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622771545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:41,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172462656] [2024-11-08 09:50:41,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:50:41,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:41,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:41,486 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) [2024-11-08 09:50:41,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 09:50:41,612 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:50:41,613 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:50:41,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 09:50:41,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 833 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-11-08 09:50:41,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:50:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 833 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-11-08 09:50:42,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172462656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:50:42,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:50:42,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 39 [2024-11-08 09:50:42,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156615209] [2024-11-08 09:50:42,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:50:42,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 09:50:42,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:42,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 09:50:42,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 09:50:42,424 INFO L87 Difference]: Start difference. First operand 214 states and 267 transitions. Second operand has 39 states, 39 states have (on average 5.717948717948718) internal successors, (223), 39 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:43,068 INFO L93 Difference]: Finished difference Result 499 states and 647 transitions. [2024-11-08 09:50:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 09:50:43,068 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.717948717948718) internal successors, (223), 39 states have internal predecessors, (223), 0 states have call successors, (0), 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 161 [2024-11-08 09:50:43,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:43,071 INFO L225 Difference]: With dead ends: 499 [2024-11-08 09:50:43,071 INFO L226 Difference]: Without dead ends: 441 [2024-11-08 09:50:43,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 09:50:43,073 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 815 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:43,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 128 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 09:50:43,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2024-11-08 09:50:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 388. [2024-11-08 09:50:43,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.2868217054263567) internal successors, (498), 387 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 498 transitions. [2024-11-08 09:50:43,113 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 498 transitions. Word has length 161 [2024-11-08 09:50:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:43,114 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 498 transitions. [2024-11-08 09:50:43,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.717948717948718) internal successors, (223), 39 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:50:43,114 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 498 transitions. [2024-11-08 09:50:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-08 09:50:43,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:43,122 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:43,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 09:50:43,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:43,323 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:43,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:43,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1096123988, now seen corresponding path program 5 times [2024-11-08 09:50:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:43,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982353952] [2024-11-08 09:50:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:43,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4311 backedges. 0 proven. 3816 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-08 09:50:45,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:45,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982353952] [2024-11-08 09:50:45,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982353952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:45,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695141220] [2024-11-08 09:50:45,026 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:50:45,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:45,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:45,028 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) [2024-11-08 09:50:45,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 09:51:18,335 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-11-08 09:51:18,335 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:51:18,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 09:51:18,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:51:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4311 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 3816 trivial. 0 not checked. [2024-11-08 09:51:18,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:51:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4311 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 3816 trivial. 0 not checked. [2024-11-08 09:51:19,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695141220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:51:19,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:51:19,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 21, 21] total 59 [2024-11-08 09:51:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333127922] [2024-11-08 09:51:19,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:51:19,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-08 09:51:19,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:51:19,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-08 09:51:19,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 09:51:19,268 INFO L87 Difference]: Start difference. First operand 388 states and 498 transitions. Second operand has 59 states, 59 states have (on average 5.898305084745763) internal successors, (348), 59 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:51:20,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:51:20,328 INFO L93 Difference]: Finished difference Result 752 states and 984 transitions. [2024-11-08 09:51:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 09:51:20,329 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.898305084745763) internal successors, (348), 59 states have internal predecessors, (348), 0 states have call successors, (0), 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 278 [2024-11-08 09:51:20,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:51:20,332 INFO L225 Difference]: With dead ends: 752 [2024-11-08 09:51:20,332 INFO L226 Difference]: Without dead ends: 691 [2024-11-08 09:51:20,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 09:51:20,334 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1195 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 09:51:20,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 213 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 09:51:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-08 09:51:20,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 682. [2024-11-08 09:51:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.251101321585903) internal successors, (852), 681 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:51:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 852 transitions. [2024-11-08 09:51:20,354 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 852 transitions. Word has length 278 [2024-11-08 09:51:20,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:51:20,355 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 852 transitions. [2024-11-08 09:51:20,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.898305084745763) internal successors, (348), 59 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:51:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 852 transitions. [2024-11-08 09:51:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-08 09:51:20,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:51:20,364 INFO L215 NwaCegarLoop]: trace histogram [57, 56, 56, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:51:20,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 09:51:20,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:51:20,565 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:51:20,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:51:20,565 INFO L85 PathProgramCache]: Analyzing trace with hash -384656236, now seen corresponding path program 6 times [2024-11-08 09:51:20,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:51:20,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629664716] [2024-11-08 09:51:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:51:20,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:51:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:51:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 9296 refuted. 0 times theorem prover too weak. 4732 trivial. 0 not checked. [2024-11-08 09:51:24,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:51:24,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629664716] [2024-11-08 09:51:24,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629664716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:51:24,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101679671] [2024-11-08 09:51:24,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 09:51:24,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:51:24,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:51:24,260 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:51:24,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process