./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_copy3_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_copy3_ground-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 217f19c8e5e57d916627a12a8c23c5343b3d451054ddc6d3d6dc70e40dff121a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 08:51:03,544 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 08:51:03,593 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 08:51:03,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 08:51:03,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 08:51:03,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 08:51:03,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 08:51:03,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 08:51:03,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 08:51:03,626 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 08:51:03,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 08:51:03,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 08:51:03,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 08:51:03,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 08:51:03,627 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 08:51:03,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 08:51:03,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 08:51:03,629 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 08:51:03,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 08:51:03,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 08:51:03,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 08:51:03,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 08:51:03,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 08:51:03,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 08:51:03,631 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 08:51:03,632 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 08:51:03,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 08:51:03,632 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 08:51:03,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 08:51:03,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 08:51:03,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 08:51:03,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 08:51:03,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:51:03,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 08:51:03,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 08:51:03,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 08:51:03,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 08:51:03,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 08:51:03,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 08:51:03,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 08:51:03,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 08:51:03,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 08:51:03,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 217f19c8e5e57d916627a12a8c23c5343b3d451054ddc6d3d6dc70e40dff121a [2024-11-18 08:51:03,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 08:51:03,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 08:51:03,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 08:51:03,874 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 08:51:03,874 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 08:51:03,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_copy3_ground-2.i [2024-11-18 08:51:05,137 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 08:51:05,280 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 08:51:05,280 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy3_ground-2.i [2024-11-18 08:51:05,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510b5290a/06998b1ad55e4e4cbf283bb9d23901a4/FLAG916ebe24b [2024-11-18 08:51:05,682 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510b5290a/06998b1ad55e4e4cbf283bb9d23901a4 [2024-11-18 08:51:05,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 08:51:05,685 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 08:51:05,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 08:51:05,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 08:51:05,692 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 08:51:05,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f0a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05, skipping insertion in model container [2024-11-18 08:51:05,694 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,715 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 08:51:05,848 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy3_ground-2.i[816,829] [2024-11-18 08:51:05,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:51:05,866 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 08:51:05,874 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy3_ground-2.i[816,829] [2024-11-18 08:51:05,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:51:05,892 INFO L204 MainTranslator]: Completed translation [2024-11-18 08:51:05,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05 WrapperNode [2024-11-18 08:51:05,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 08:51:05,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 08:51:05,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 08:51:05,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 08:51:05,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,921 INFO L138 Inliner]: procedures = 16, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2024-11-18 08:51:05,921 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 08:51:05,922 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 08:51:05,922 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 08:51:05,922 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 08:51:05,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,931 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,940 INFO L175 MemorySlicer]: Split 12 memory accesses to 5 slices as follows [2, 3, 3, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 2, 1, 1]. [2024-11-18 08:51:05,940 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,941 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,952 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 08:51:05,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 08:51:05,956 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 08:51:05,956 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 08:51:05,957 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (1/1) ... [2024-11-18 08:51:05,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:51:05,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:05,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 08:51:05,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 08:51:06,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 08:51:06,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 08:51:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 08:51:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 08:51:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 08:51:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 08:51:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 08:51:06,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 08:51:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 08:51:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 08:51:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 08:51:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 08:51:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 08:51:06,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 08:51:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 08:51:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 08:51:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 08:51:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 08:51:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 08:51:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 08:51:06,124 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 08:51:06,126 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 08:51:06,294 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-18 08:51:06,295 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 08:51:06,307 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 08:51:06,308 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-18 08:51:06,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:06 BoogieIcfgContainer [2024-11-18 08:51:06,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 08:51:06,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 08:51:06,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 08:51:06,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 08:51:06,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:51:05" (1/3) ... [2024-11-18 08:51:06,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af3e4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:06, skipping insertion in model container [2024-11-18 08:51:06,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:05" (2/3) ... [2024-11-18 08:51:06,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af3e4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:06, skipping insertion in model container [2024-11-18 08:51:06,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:06" (3/3) ... [2024-11-18 08:51:06,316 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy3_ground-2.i [2024-11-18 08:51:06,329 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 08:51:06,330 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 08:51:06,378 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 08:51:06,383 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;@2fb6ae77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 08:51:06,383 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 08:51:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:06,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 08:51:06,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:06,390 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:06,391 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:06,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:06,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2053894623, now seen corresponding path program 1 times [2024-11-18 08:51:06,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:06,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507336588] [2024-11-18 08:51:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:51:06,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:51:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:51:06,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:06,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507336588] [2024-11-18 08:51:06,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507336588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:51:06,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:51:06,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 08:51:06,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112257770] [2024-11-18 08:51:06,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:51:06,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:51:06,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:51:06,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:51:06,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:51:06,611 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:06,634 INFO L93 Difference]: Finished difference Result 46 states and 66 transitions. [2024-11-18 08:51:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:51:06,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-18 08:51:06,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:06,641 INFO L225 Difference]: With dead ends: 46 [2024-11-18 08:51:06,641 INFO L226 Difference]: Without dead ends: 22 [2024-11-18 08:51:06,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:51:06,646 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:51:06,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 49 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:51:06,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-18 08:51:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-11-18 08:51:06,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 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) [2024-11-18 08:51:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-18 08:51:06,667 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2024-11-18 08:51:06,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:51:06,667 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-18 08:51:06,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:06,667 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-18 08:51:06,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 08:51:06,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:06,668 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:06,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 08:51:06,669 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:06,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:06,669 INFO L85 PathProgramCache]: Analyzing trace with hash -418223009, now seen corresponding path program 1 times [2024-11-18 08:51:06,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:06,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195506248] [2024-11-18 08:51:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:51:06,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:51:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:51:06,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:06,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195506248] [2024-11-18 08:51:06,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195506248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:51:06,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165477156] [2024-11-18 08:51:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:51:06,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:06,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:06,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:51:06,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 08:51:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:51:06,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 08:51:06,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:51:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:51:06,883 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 08:51:06,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165477156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:51:06,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 08:51:06,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 08:51:06,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43328946] [2024-11-18 08:51:06,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:51:06,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:51:06,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:51:06,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:51:06,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 08:51:06,887 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:06,930 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2024-11-18 08:51:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:51:06,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-18 08:51:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:06,931 INFO L225 Difference]: With dead ends: 40 [2024-11-18 08:51:06,931 INFO L226 Difference]: Without dead ends: 27 [2024-11-18 08:51:06,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 08:51:06,933 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:51:06,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:51:06,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-18 08:51:06,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2024-11-18 08:51:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-18 08:51:06,940 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2024-11-18 08:51:06,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:51:06,940 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-18 08:51:06,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:06,941 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-18 08:51:06,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 08:51:06,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:06,941 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:06,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 08:51:07,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:07,142 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:07,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:07,143 INFO L85 PathProgramCache]: Analyzing trace with hash 241580185, now seen corresponding path program 1 times [2024-11-18 08:51:07,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:07,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508625512] [2024-11-18 08:51:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:51:07,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:51:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 08:51:07,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:07,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508625512] [2024-11-18 08:51:07,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508625512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:51:07,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961962091] [2024-11-18 08:51:07,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:51:07,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:07,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:07,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:51:07,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 08:51:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:51:07,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 08:51:07,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:51:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 08:51:07,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:51:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 08:51:07,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961962091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:51:07,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:51:07,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 08:51:07,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212295973] [2024-11-18 08:51:07,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:51:07,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 08:51:07,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:51:07,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 08:51:07,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:51:07,341 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:07,369 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2024-11-18 08:51:07,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 08:51:07,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 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 21 [2024-11-18 08:51:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:07,370 INFO L225 Difference]: With dead ends: 49 [2024-11-18 08:51:07,370 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 08:51:07,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:51:07,371 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:51:07,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 82 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:51:07,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 08:51:07,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-18 08:51:07,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-18 08:51:07,378 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 21 [2024-11-18 08:51:07,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:51:07,378 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-18 08:51:07,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-18 08:51:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-18 08:51:07,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:07,380 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:07,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 08:51:07,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-18 08:51:07,582 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:07,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:07,583 INFO L85 PathProgramCache]: Analyzing trace with hash 886739667, now seen corresponding path program 2 times [2024-11-18 08:51:07,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:07,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887335822] [2024-11-18 08:51:07,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:51:07,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:07,632 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:51:07,632 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 08:51:07,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:07,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887335822] [2024-11-18 08:51:07,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887335822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:51:07,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593620761] [2024-11-18 08:51:07,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:51:07,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:07,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:07,704 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:51:07,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 08:51:07,773 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:51:07,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:07,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 08:51:07,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:51:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 08:51:07,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:51:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 08:51:07,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593620761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:51:07,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:51:07,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-18 08:51:07,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089046234] [2024-11-18 08:51:07,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:51:07,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 08:51:07,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:51:07,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 08:51:07,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 08:51:07,914 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:08,006 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2024-11-18 08:51:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 08:51:08,007 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 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 27 [2024-11-18 08:51:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:08,007 INFO L225 Difference]: With dead ends: 70 [2024-11-18 08:51:08,007 INFO L226 Difference]: Without dead ends: 51 [2024-11-18 08:51:08,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 08:51:08,012 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:51:08,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 90 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:51:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-18 08:51:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2024-11-18 08:51:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-18 08:51:08,021 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2024-11-18 08:51:08,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:51:08,022 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-18 08:51:08,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-18 08:51:08,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 08:51:08,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:08,025 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:08,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 08:51:08,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:08,226 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:08,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:08,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1464945409, now seen corresponding path program 3 times [2024-11-18 08:51:08,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:08,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969786468] [2024-11-18 08:51:08,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:51:08,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:08,274 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:51:08,275 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-18 08:51:08,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:08,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969786468] [2024-11-18 08:51:08,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969786468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:51:08,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932596063] [2024-11-18 08:51:08,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:51:08,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:08,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:08,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:51:08,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 08:51:08,441 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:51:08,441 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:08,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 08:51:08,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:51:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-18 08:51:08,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:51:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-18 08:51:08,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932596063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:51:08,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:51:08,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-18 08:51:08,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8452086] [2024-11-18 08:51:08,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:51:08,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 08:51:08,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:51:08,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 08:51:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-18 08:51:08,496 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:08,573 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2024-11-18 08:51:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 08:51:08,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 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 45 [2024-11-18 08:51:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:08,574 INFO L225 Difference]: With dead ends: 91 [2024-11-18 08:51:08,574 INFO L226 Difference]: Without dead ends: 72 [2024-11-18 08:51:08,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-18 08:51:08,575 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:51:08,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 40 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:51:08,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-18 08:51:08,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-18 08:51:08,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-18 08:51:08,581 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 45 [2024-11-18 08:51:08,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:51:08,581 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-18 08:51:08,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:08,581 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-18 08:51:08,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 08:51:08,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:08,582 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:08,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 08:51:08,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:08,783 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:08,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash 813220073, now seen corresponding path program 4 times [2024-11-18 08:51:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160280214] [2024-11-18 08:51:08,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:51:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:08,827 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:51:08,827 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-18 08:51:08,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:08,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160280214] [2024-11-18 08:51:08,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160280214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:51:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621450809] [2024-11-18 08:51:08,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:51:08,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:08,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:08,978 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:51:08,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 08:51:09,100 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:51:09,100 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:09,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 08:51:09,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:51:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-18 08:51:09,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:51:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-18 08:51:09,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621450809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:51:09,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:51:09,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2024-11-18 08:51:09,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061874071] [2024-11-18 08:51:09,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:51:09,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-18 08:51:09,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:51:09,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-18 08:51:09,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2024-11-18 08:51:09,450 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 31 states, 31 states have (on average 2.806451612903226) internal successors, (87), 31 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:09,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:09,597 INFO L93 Difference]: Finished difference Result 154 states and 176 transitions. [2024-11-18 08:51:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-18 08:51:09,598 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.806451612903226) internal successors, (87), 31 states have internal predecessors, (87), 0 states have call successors, (0), 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 69 [2024-11-18 08:51:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:09,600 INFO L225 Difference]: With dead ends: 154 [2024-11-18 08:51:09,600 INFO L226 Difference]: Without dead ends: 105 [2024-11-18 08:51:09,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2024-11-18 08:51:09,601 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:51:09,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 122 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:51:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-18 08:51:09,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2024-11-18 08:51:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2024-11-18 08:51:09,613 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 69 [2024-11-18 08:51:09,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:51:09,613 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2024-11-18 08:51:09,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.806451612903226) internal successors, (87), 31 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:09,613 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2024-11-18 08:51:09,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-18 08:51:09,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:09,614 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:09,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 08:51:09,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:09,815 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:09,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash -394234997, now seen corresponding path program 5 times [2024-11-18 08:51:09,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:09,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439309392] [2024-11-18 08:51:09,816 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:51:09,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:10,054 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-11-18 08:51:10,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-18 08:51:10,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:10,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439309392] [2024-11-18 08:51:10,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439309392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:51:10,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104780709] [2024-11-18 08:51:10,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:51:10,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:10,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:10,622 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:51:10,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process