./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array3_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array3_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:19:17,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:19:17,978 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:19:17,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:19:17,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:19:18,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:19:18,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:19:18,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:19:18,014 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:19:18,014 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:19:18,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:19:18,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:19:18,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:19:18,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:19:18,020 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:19:18,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:19:18,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:19:18,021 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:19:18,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:19:18,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:19:18,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:19:18,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:19:18,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:19:18,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:19:18,023 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:19:18,024 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:19:18,024 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:19:18,024 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:19:18,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:19:18,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:19:18,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:19:18,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:19:18,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:19:18,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:19:18,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:19:18,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:19:18,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:19:18,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:19:18,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:19:18,028 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:19:18,028 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:19:18,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:19:18,029 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 [2024-11-18 09:19:18,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:19:18,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:19:18,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:19:18,323 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:19:18,324 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:19:18,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array3_pattern.c [2024-11-18 09:19:19,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:19:19,996 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:19:19,996 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array3_pattern.c [2024-11-18 09:19:20,003 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e1751d0/25788f70ed9146ed8ad3b499912bf65d/FLAG659c8c8e9 [2024-11-18 09:19:20,016 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e1751d0/25788f70ed9146ed8ad3b499912bf65d [2024-11-18 09:19:20,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:19:20,019 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:19:20,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:19:20,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:19:20,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:19:20,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c249cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20, skipping insertion in model container [2024-11-18 09:19:20,033 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,054 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:19:20,231 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-patterns/array3_pattern.c[1393,1406] [2024-11-18 09:19:20,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:19:20,256 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:19:20,268 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-patterns/array3_pattern.c[1393,1406] [2024-11-18 09:19:20,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:19:20,297 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:19:20,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20 WrapperNode [2024-11-18 09:19:20,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:19:20,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:19:20,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:19:20,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:19:20,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,331 INFO L138 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2024-11-18 09:19:20,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:19:20,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:19:20,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:19:20,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:19:20,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,346 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,361 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-11-18 09:19:20,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,370 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:19:20,379 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:19:20,379 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:19:20,379 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:19:20,380 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (1/1) ... [2024-11-18 09:19:20,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:19:20,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:20,414 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 09:19:20,418 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 09:19:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:19:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 09:19:20,462 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 09:19:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:19:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:19:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:19:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:19:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:19:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:19:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:19:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure square [2024-11-18 09:19:20,463 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2024-11-18 09:19:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:19:20,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:19:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:19:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:19:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:19:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:19:20,538 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:19:20,539 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:19:20,689 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-18 09:19:20,690 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:19:20,701 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:19:20,701 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 09:19:20,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:19:20 BoogieIcfgContainer [2024-11-18 09:19:20,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:19:20,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:19:20,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:19:20,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:19:20,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:19:20" (1/3) ... [2024-11-18 09:19:20,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b58408c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:19:20, skipping insertion in model container [2024-11-18 09:19:20,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:20" (2/3) ... [2024-11-18 09:19:20,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b58408c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:19:20, skipping insertion in model container [2024-11-18 09:19:20,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:19:20" (3/3) ... [2024-11-18 09:19:20,732 INFO L112 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2024-11-18 09:19:20,744 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:19:20,744 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:19:20,806 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:19:20,813 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;@4a4f7170, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:19:20,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:19:20,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 09:19:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 09:19:20,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:20,825 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:20,825 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:20,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:20,830 INFO L85 PathProgramCache]: Analyzing trace with hash -545145993, now seen corresponding path program 1 times [2024-11-18 09:19:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:20,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142593339] [2024-11-18 09:19:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:20,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:20,984 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 09:19:20,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:20,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142593339] [2024-11-18 09:19:20,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142593339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:19:20,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:19:20,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:19:20,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895883727] [2024-11-18 09:19:20,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:19:20,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:19:20,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:21,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:19:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:19:21,021 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 09:19:21,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:21,042 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2024-11-18 09:19:21,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:19:21,045 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-18 09:19:21,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:21,052 INFO L225 Difference]: With dead ends: 61 [2024-11-18 09:19:21,052 INFO L226 Difference]: Without dead ends: 28 [2024-11-18 09:19:21,055 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 [2024-11-18 09:19:21,062 INFO L432 NwaCegarLoop]: 36 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, 36 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 [2024-11-18 09:19:21,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:19:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-18 09:19:21,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-18 09:19:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 09:19:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-18 09:19:21,106 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2024-11-18 09:19:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:21,106 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-18 09:19:21,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 09:19:21,107 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-18 09:19:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 09:19:21,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:21,110 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:21,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:19:21,111 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:21,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:21,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1914733633, now seen corresponding path program 1 times [2024-11-18 09:19:21,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:21,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664452133] [2024-11-18 09:19:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:21,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 09:19:21,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:21,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664452133] [2024-11-18 09:19:21,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664452133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:19:21,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:19:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:19:21,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605776073] [2024-11-18 09:19:21,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:19:21,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:19:21,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:21,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:19:21,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:19:21,530 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 09:19:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:21,557 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-11-18 09:19:21,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:19:21,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-18 09:19:21,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:21,559 INFO L225 Difference]: With dead ends: 35 [2024-11-18 09:19:21,559 INFO L226 Difference]: Without dead ends: 31 [2024-11-18 09:19:21,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:19:21,561 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:21,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 77 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:19:21,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-18 09:19:21,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-18 09:19:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 09:19:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-18 09:19:21,574 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2024-11-18 09:19:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:21,575 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-18 09:19:21,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 09:19:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-18 09:19:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-18 09:19:21,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:21,578 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:21,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:19:21,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:21,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:21,579 INFO L85 PathProgramCache]: Analyzing trace with hash 932629635, now seen corresponding path program 1 times [2024-11-18 09:19:21,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:21,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492560059] [2024-11-18 09:19:21,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:21,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 09:19:21,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:21,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492560059] [2024-11-18 09:19:21,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492560059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:19:21,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:19:21,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 09:19:21,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686163798] [2024-11-18 09:19:21,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:19:21,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 09:19:21,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 09:19:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:19:21,744 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 09:19:21,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:21,838 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2024-11-18 09:19:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 09:19:21,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2024-11-18 09:19:21,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:21,840 INFO L225 Difference]: With dead ends: 59 [2024-11-18 09:19:21,840 INFO L226 Difference]: Without dead ends: 36 [2024-11-18 09:19:21,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:19:21,842 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:21,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 69 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:19:21,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-18 09:19:21,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2024-11-18 09:19:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 09:19:21,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-18 09:19:21,853 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 34 [2024-11-18 09:19:21,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:21,853 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-18 09:19:21,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 09:19:21,854 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-18 09:19:21,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 09:19:21,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:21,856 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:21,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:19:21,856 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:21,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:21,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1169062725, now seen corresponding path program 1 times [2024-11-18 09:19:21,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:21,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180137037] [2024-11-18 09:19:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:21,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 09:19:21,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025236315] [2024-11-18 09:19:21,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:21,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:21,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:21,937 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 09:19:21,939 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 09:19:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:22,056 WARN L253 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-18 09:19:22,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:22,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:19:22,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:19:22,889 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-18 09:19:22,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 21 [2024-11-18 09:19:22,920 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-18 09:19:22,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 21 [2024-11-18 09:19:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:19:23,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:19:26,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:26,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180137037] [2024-11-18 09:19:26,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 09:19:26,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025236315] [2024-11-18 09:19:26,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025236315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:19:26,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:19:26,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2024-11-18 09:19:26,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814164007] [2024-11-18 09:19:26,316 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 09:19:26,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 09:19:26,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:26,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 09:19:26,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 09:19:26,319 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 24 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 09:19:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:31,712 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2024-11-18 09:19:31,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 09:19:31,712 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2024-11-18 09:19:31,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:31,714 INFO L225 Difference]: With dead ends: 81 [2024-11-18 09:19:31,714 INFO L226 Difference]: Without dead ends: 77 [2024-11-18 09:19:31,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=355, Invalid=2094, Unknown=1, NotChecked=0, Total=2450 [2024-11-18 09:19:31,716 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 82 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:31,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 232 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:19:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-18 09:19:31,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 61. [2024-11-18 09:19:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-18 09:19:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2024-11-18 09:19:31,729 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 36 [2024-11-18 09:19:31,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:31,729 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2024-11-18 09:19:31,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 09:19:31,730 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2024-11-18 09:19:31,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 09:19:31,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:31,731 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:31,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 09:19:31,935 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 [2024-11-18 09:19:31,936 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:31,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:31,937 INFO L85 PathProgramCache]: Analyzing trace with hash 747995527, now seen corresponding path program 2 times [2024-11-18 09:19:31,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:31,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428126666] [2024-11-18 09:19:31,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:19:31,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:31,966 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:19:31,969 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 09:19:32,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:32,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428126666] [2024-11-18 09:19:32,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428126666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:19:32,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346624112] [2024-11-18 09:19:32,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:19:32,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:32,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:32,124 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 09:19:32,126 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 09:19:32,202 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:19:32,202 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:32,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:19:32,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:19:32,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:19:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 09:19:32,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346624112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:19:32,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:19:32,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 09:19:32,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308176807] [2024-11-18 09:19:32,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:19:32,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:19:32,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:32,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:19:32,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:19:32,392 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-18 09:19:32,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:32,600 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2024-11-18 09:19:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:19:32,600 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 38 [2024-11-18 09:19:32,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:32,602 INFO L225 Difference]: With dead ends: 79 [2024-11-18 09:19:32,604 INFO L226 Difference]: Without dead ends: 75 [2024-11-18 09:19:32,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:19:32,606 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 27 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:32,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 187 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:19:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-18 09:19:32,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2024-11-18 09:19:32,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-18 09:19:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2024-11-18 09:19:32,627 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 38 [2024-11-18 09:19:32,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:32,628 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2024-11-18 09:19:32,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-18 09:19:32,630 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2024-11-18 09:19:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 09:19:32,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:32,632 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:32,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 09:19:32,836 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 [2024-11-18 09:19:32,837 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:32,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:32,837 INFO L85 PathProgramCache]: Analyzing trace with hash 108311305, now seen corresponding path program 3 times [2024-11-18 09:19:32,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:32,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57975367] [2024-11-18 09:19:32,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:19:32,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:32,863 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:19:32,863 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 09:19:32,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:32,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57975367] [2024-11-18 09:19:32,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57975367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:19:32,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955851690] [2024-11-18 09:19:32,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:19:32,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:32,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:32,955 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 09:19:32,957 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 09:19:33,025 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:19:33,026 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:33,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:19:33,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:19:33,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:19:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 09:19:33,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955851690] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:19:33,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:19:33,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 09:19:33,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041332961] [2024-11-18 09:19:33,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:19:33,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:19:33,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:33,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:19:33,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:19:33,182 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-18 09:19:33,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:33,297 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2024-11-18 09:19:33,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:19:33,297 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 48 [2024-11-18 09:19:33,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:33,298 INFO L225 Difference]: With dead ends: 80 [2024-11-18 09:19:33,298 INFO L226 Difference]: Without dead ends: 48 [2024-11-18 09:19:33,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:19:33,301 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:33,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 86 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:19:33,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-18 09:19:33,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2024-11-18 09:19:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 09:19:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-11-18 09:19:33,315 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 48 [2024-11-18 09:19:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:33,316 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-11-18 09:19:33,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-18 09:19:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-11-18 09:19:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-18 09:19:33,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:33,317 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:33,335 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 09:19:33,517 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 [2024-11-18 09:19:33,518 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:33,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:33,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1523213899, now seen corresponding path program 4 times [2024-11-18 09:19:33,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:33,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451215560] [2024-11-18 09:19:33,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:19:33,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:33,562 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:19:33,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-18 09:19:33,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153787005] [2024-11-18 09:19:33,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:19:33,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:33,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:33,568 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 09:19:33,570 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 09:19:33,736 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:19:33,737 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:33,740 WARN L253 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-18 09:19:33,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:33,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:19:33,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:19:33,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-18 09:19:33,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-18 09:19:34,614 INFO L349 Elim1Store]: treesize reduction 181, result has 26.7 percent of original size [2024-11-18 09:19:34,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 58 treesize of output 91 [2024-11-18 09:19:34,671 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-11-18 09:19:34,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 153 treesize of output 146 [2024-11-18 09:19:34,752 INFO L349 Elim1Store]: treesize reduction 75, result has 27.2 percent of original size [2024-11-18 09:19:34,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 51 [2024-11-18 09:19:34,901 INFO L349 Elim1Store]: treesize reduction 75, result has 27.2 percent of original size [2024-11-18 09:19:34,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 51 [2024-11-18 09:19:37,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:19:37,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 133 treesize of output 247 [2024-11-18 09:20:08,196 WARN L286 SmtUtils]: Spent 8.32s on a formula simplification that was a NOOP. DAG size: 1201 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-18 09:20:08,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:20:08,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 40 select indices, 40 select index equivalence classes, 1 disjoint index pairs (out of 780 index pairs), introduced 40 new quantified variables, introduced 780 case distinctions, treesize of input 366 treesize of output 3226