./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sina5.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-fpi/sina5.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 503513a726b63dcf7252b591818901fbaab844b1443a8550e123aa98a06238f6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:30:13,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:30:13,336 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:30:13,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:30:13,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:30:13,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:30:13,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:30:13,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:30:13,360 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:30:13,362 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:30:13,362 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:30:13,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:30:13,363 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:30:13,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:30:13,363 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:30:13,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:30:13,364 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:30:13,364 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:30:13,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:30:13,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:30:13,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:30:13,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:30:13,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:30:13,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:30:13,368 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:30:13,368 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:30:13,369 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:30:13,369 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:30:13,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:30:13,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:30:13,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:30:13,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:30:13,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:30:13,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:30:13,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:30:13,370 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:30:13,370 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:30:13,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:30:13,370 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:30:13,370 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:30:13,371 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:30:13,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:30:13,372 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503513a726b63dcf7252b591818901fbaab844b1443a8550e123aa98a06238f6 [2024-11-18 09:30:13,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:30:13,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:30:13,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:30:13,568 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:30:13,568 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:30:13,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sina5.c [2024-11-18 09:30:14,752 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:30:14,906 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:30:14,907 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina5.c [2024-11-18 09:30:14,912 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f0612af8/511c42fb2f944e87abc9149f15cfb9ff/FLAG991e70bd2 [2024-11-18 09:30:15,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f0612af8/511c42fb2f944e87abc9149f15cfb9ff [2024-11-18 09:30:15,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:30:15,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:30:15,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:30:15,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:30:15,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:30:15,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df31589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15, skipping insertion in model container [2024-11-18 09:30:15,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,348 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:30:15,479 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-fpi/sina5.c[588,601] [2024-11-18 09:30:15,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:30:15,499 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:30:15,508 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-fpi/sina5.c[588,601] [2024-11-18 09:30:15,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:30:15,527 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:30:15,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15 WrapperNode [2024-11-18 09:30:15,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:30:15,528 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:30:15,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:30:15,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:30:15,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,554 INFO L138 Inliner]: procedures = 17, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 117 [2024-11-18 09:30:15,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:30:15,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:30:15,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:30:15,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:30:15,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,586 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,625 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 8, 6, 2, 5]. 35 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0, 0]. The 6 writes are split as follows [0, 0, 3, 1, 2]. [2024-11-18 09:30:15,625 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,637 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,641 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,642 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:30:15,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:30:15,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:30:15,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:30:15,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (1/1) ... [2024-11-18 09:30:15,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:30:15,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:30:15,673 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 09:30:15,676 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 09:30:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:30:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:30:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:30:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:30:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 09:30:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 09:30:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:30:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:30:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:30:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:30:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 09:30:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 09:30:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-18 09:30:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:30:15,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:30:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:30:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:30:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:30:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 09:30:15,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 09:30:15,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:30:15,786 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:30:15,789 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:30:15,955 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-18 09:30:15,956 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:30:15,969 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:30:15,970 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-18 09:30:15,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:30:15 BoogieIcfgContainer [2024-11-18 09:30:15,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:30:15,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:30:15,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:30:15,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:30:15,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:30:15" (1/3) ... [2024-11-18 09:30:15,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6e2a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:30:15, skipping insertion in model container [2024-11-18 09:30:15,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:30:15" (2/3) ... [2024-11-18 09:30:15,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6e2a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:30:15, skipping insertion in model container [2024-11-18 09:30:15,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:30:15" (3/3) ... [2024-11-18 09:30:15,979 INFO L112 eAbstractionObserver]: Analyzing ICFG sina5.c [2024-11-18 09:30:15,991 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:30:15,991 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:30:16,039 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:30:16,044 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;@1d987d7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:30:16,044 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:30:16,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 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 09:30:16,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 09:30:16,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:30:16,052 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:30:16,052 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:30:16,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:30:16,056 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2024-11-18 09:30:16,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:30:16,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97952999] [2024-11-18 09:30:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:30:16,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:30:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:30:16,196 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 09:30:16,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:30:16,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97952999] [2024-11-18 09:30:16,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97952999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:30:16,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:30:16,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:30:16,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841927733] [2024-11-18 09:30:16,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:30:16,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:30:16,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:30:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:30:16,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:30:16,223 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 09:30:16,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:30:16,234 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2024-11-18 09:30:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:30:16,238 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2024-11-18 09:30:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:30:16,243 INFO L225 Difference]: With dead ends: 56 [2024-11-18 09:30:16,243 INFO L226 Difference]: Without dead ends: 26 [2024-11-18 09:30:16,245 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 09:30:16,248 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 09:30:16,250 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 09:30:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-18 09:30:16,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-18 09:30:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:30:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-18 09:30:16,283 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2024-11-18 09:30:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:30:16,285 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-18 09:30:16,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 09:30:16,286 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-18 09:30:16,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 09:30:16,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:30:16,287 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:30:16,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:30:16,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:30:16,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:30:16,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2024-11-18 09:30:16,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:30:16,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483340646] [2024-11-18 09:30:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:30:16,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:30:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:30:16,465 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 09:30:16,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:30:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483340646] [2024-11-18 09:30:16,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483340646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:30:16,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:30:16,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:30:16,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546759065] [2024-11-18 09:30:16,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:30:16,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:30:16,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:30:16,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:30:16,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:30:16,468 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 09:30:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:30:16,548 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2024-11-18 09:30:16,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:30:16,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2024-11-18 09:30:16,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:30:16,549 INFO L225 Difference]: With dead ends: 61 [2024-11-18 09:30:16,550 INFO L226 Difference]: Without dead ends: 42 [2024-11-18 09:30:16,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:30:16,551 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 52 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:30:16,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 18 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:30:16,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-18 09:30:16,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2024-11-18 09:30:16,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 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 09:30:16,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-18 09:30:16,557 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2024-11-18 09:30:16,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:30:16,557 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-18 09:30:16,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 09:30:16,557 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-18 09:30:16,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 09:30:16,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:30:16,558 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:30:16,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:30:16,558 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:30:16,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:30:16,559 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2024-11-18 09:30:16,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:30:16,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533801264] [2024-11-18 09:30:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:30:16,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:30:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:30:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:30:17,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:30:17,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533801264] [2024-11-18 09:30:17,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533801264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:30:17,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957385143] [2024-11-18 09:30:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:30:17,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:17,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:30:17,995 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 09:30:17,996 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 09:30:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:30:18,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-18 09:30:18,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:30:18,147 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 09:30:18,183 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 09:30:18,298 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 09:30:18,359 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 19 treesize of output 11 [2024-11-18 09:30:18,409 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 19 treesize of output 11 [2024-11-18 09:30:18,447 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 19 treesize of output 11 [2024-11-18 09:30:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:30:18,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:30:18,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 31 treesize of output 29 [2024-11-18 09:30:18,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 49 treesize of output 47 [2024-11-18 09:30:18,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 24 treesize of output 22 [2024-11-18 09:30:18,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 36 treesize of output 34 [2024-11-18 09:30:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:30:18,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957385143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:30:18,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:30:18,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 35 [2024-11-18 09:30:18,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231715067] [2024-11-18 09:30:18,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:30:18,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 09:30:18,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:30:18,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 09:30:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 09:30:18,786 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 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 09:30:19,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:30:19,337 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2024-11-18 09:30:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 09:30:19,337 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 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 28 [2024-11-18 09:30:19,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:30:19,338 INFO L225 Difference]: With dead ends: 73 [2024-11-18 09:30:19,338 INFO L226 Difference]: Without dead ends: 71 [2024-11-18 09:30:19,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=252, Invalid=1470, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 09:30:19,340 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 69 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:30:19,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 229 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:30:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-18 09:30:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2024-11-18 09:30:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 53 states have internal predecessors, (65), 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 09:30:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-11-18 09:30:19,347 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 28 [2024-11-18 09:30:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:30:19,348 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-11-18 09:30:19,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 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 09:30:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-11-18 09:30:19,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-18 09:30:19,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:30:19,349 INFO L215 NwaCegarLoop]: trace histogram [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 09:30:19,364 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 09:30:19,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:19,553 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:30:19,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:30:19,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1642466588, now seen corresponding path program 2 times [2024-11-18 09:30:19,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:30:19,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186267849] [2024-11-18 09:30:19,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:30:19,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:30:19,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:30:19,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:30:19,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:30:19,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186267849] [2024-11-18 09:30:19,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186267849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:30:19,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188963816] [2024-11-18 09:30:19,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:30:19,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:19,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:30:19,640 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 09:30:19,641 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 09:30:19,700 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:30:19,700 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:19,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:30:19,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:30:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:30:19,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:30:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:30:19,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188963816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:30:19,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:30:19,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 09:30:19,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113154757] [2024-11-18 09:30:19,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:30:19,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:30:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:30:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:30:19,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:30:19,779 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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 09:30:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:30:19,912 INFO L93 Difference]: Finished difference Result 133 states and 158 transitions. [2024-11-18 09:30:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:30:19,914 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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 30 [2024-11-18 09:30:19,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:30:19,915 INFO L225 Difference]: With dead ends: 133 [2024-11-18 09:30:19,915 INFO L226 Difference]: Without dead ends: 75 [2024-11-18 09:30:19,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:30:19,916 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:30:19,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 54 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:30:19,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-18 09:30:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2024-11-18 09:30:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 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 09:30:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-18 09:30:19,930 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 30 [2024-11-18 09:30:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:30:19,930 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-18 09:30:19,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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 09:30:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-18 09:30:19,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-18 09:30:19,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:30:19,931 INFO L215 NwaCegarLoop]: trace histogram [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 09:30:19,944 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 09:30:20,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 09:30:20,132 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:30:20,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:30:20,133 INFO L85 PathProgramCache]: Analyzing trace with hash -396360796, now seen corresponding path program 3 times [2024-11-18 09:30:20,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:30:20,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625537537] [2024-11-18 09:30:20,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:30:20,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:30:20,156 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:30:20,156 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:30:20,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:30:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625537537] [2024-11-18 09:30:20,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625537537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:30:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839263299] [2024-11-18 09:30:20,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:30:20,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:20,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:30:20,263 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 09:30:20,265 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 09:30:20,336 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:30:20,336 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:20,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:30:20,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:30:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:30:20,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:30:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:30:20,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839263299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:30:20,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:30:20,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-18 09:30:20,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896392705] [2024-11-18 09:30:20,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:30:20,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 09:30:20,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:30:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 09:30:20,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:30:20,417 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:30:20,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:30:20,541 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2024-11-18 09:30:20,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:30:20,542 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-18 09:30:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:30:20,542 INFO L225 Difference]: With dead ends: 74 [2024-11-18 09:30:20,542 INFO L226 Difference]: Without dead ends: 57 [2024-11-18 09:30:20,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-11-18 09:30:20,543 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 87 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:30:20,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 44 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:30:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-18 09:30:20,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2024-11-18 09:30:20,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 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 09:30:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-11-18 09:30:20,548 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2024-11-18 09:30:20,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:30:20,548 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-11-18 09:30:20,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:30:20,549 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-11-18 09:30:20,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 09:30:20,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:30:20,549 INFO L215 NwaCegarLoop]: trace histogram [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 09:30:20,562 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 09:30:20,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:20,750 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:30:20,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:30:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash 389318684, now seen corresponding path program 4 times [2024-11-18 09:30:20,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:30:20,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833892402] [2024-11-18 09:30:20,751 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:30:20,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:30:20,795 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:30:20,795 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:30:22,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:30:22,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833892402] [2024-11-18 09:30:22,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833892402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:30:22,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626585165] [2024-11-18 09:30:22,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:30:22,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:22,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:30:22,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:30:22,487 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 09:30:22,564 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:30:22,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:22,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-18 09:30:22,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:30:22,582 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 09:30:22,625 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 09:30:22,707 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 09:30:22,836 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 09:30:22,955 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 09:30:23,103 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 19 treesize of output 11 [2024-11-18 09:30:23,241 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 19 treesize of output 11 [2024-11-18 09:30:23,374 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 19 treesize of output 11 [2024-11-18 09:30:23,495 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 19 treesize of output 11 [2024-11-18 09:30:23,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:23,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-18 09:30:23,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:23,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-11-18 09:30:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:30:23,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:30:24,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 68 treesize of output 64 [2024-11-18 09:30:24,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:24,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 585 treesize of output 561 [2024-11-18 09:30:24,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 52 treesize of output 48 [2024-11-18 09:30:25,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:25,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 343 treesize of output 319 [2024-11-18 09:30:25,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 56 treesize of output 52 [2024-11-18 09:30:25,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:25,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 389 treesize of output 365 [2024-11-18 09:30:25,083 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:30:25,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626585165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:30:25,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:30:25,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26, 26] total 77 [2024-11-18 09:30:25,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640189363] [2024-11-18 09:30:25,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:30:25,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-18 09:30:25,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:30:25,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-18 09:30:25,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=5370, Unknown=0, NotChecked=0, Total=5852 [2024-11-18 09:30:25,086 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 77 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 77 states have internal predecessors, (101), 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 09:30:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:30:29,385 INFO L93 Difference]: Finished difference Result 151 states and 170 transitions. [2024-11-18 09:30:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-18 09:30:29,386 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 77 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-18 09:30:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:30:29,387 INFO L225 Difference]: With dead ends: 151 [2024-11-18 09:30:29,387 INFO L226 Difference]: Without dead ends: 130 [2024-11-18 09:30:29,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5200 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1530, Invalid=15240, Unknown=0, NotChecked=0, Total=16770 [2024-11-18 09:30:29,391 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 758 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:30:29,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 701 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 09:30:29,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-18 09:30:29,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 74. [2024-11-18 09:30:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 73 states have internal predecessors, (84), 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 09:30:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2024-11-18 09:30:29,412 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 38 [2024-11-18 09:30:29,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:30:29,412 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2024-11-18 09:30:29,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 77 states have internal predecessors, (101), 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 09:30:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2024-11-18 09:30:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 09:30:29,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:30:29,413 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:30:29,426 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 09:30:29,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:29,614 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:30:29,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:30:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash -465930606, now seen corresponding path program 1 times [2024-11-18 09:30:29,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:30:29,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092132116] [2024-11-18 09:30:29,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:30:29,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:30:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:30:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:30:31,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:30:31,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092132116] [2024-11-18 09:30:31,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092132116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:30:31,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368503823] [2024-11-18 09:30:31,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:30:31,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:31,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:30:31,297 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 09:30:31,298 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 09:30:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:30:31,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-18 09:30:31,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:30:31,380 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 09:30:31,388 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 09:30:31,419 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 09:30:31,569 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 09:30:31,662 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 09:30:31,810 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 19 treesize of output 11 [2024-11-18 09:30:31,927 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 19 treesize of output 11 [2024-11-18 09:30:32,073 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 19 treesize of output 11 [2024-11-18 09:30:32,170 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 19 treesize of output 11 [2024-11-18 09:30:32,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:32,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-11-18 09:30:32,338 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 19 treesize of output 11 [2024-11-18 09:30:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:30:32,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:30:33,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 68 treesize of output 64 [2024-11-18 09:30:33,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:33,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 585 treesize of output 561 [2024-11-18 09:30:33,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 56 treesize of output 52 [2024-11-18 09:30:33,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:33,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 363 treesize of output 339 [2024-11-18 09:30:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:30:33,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368503823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:30:33,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:30:33,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 27, 27] total 78 [2024-11-18 09:30:33,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630186448] [2024-11-18 09:30:33,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:30:33,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-18 09:30:33,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:30:33,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-18 09:30:33,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=5490, Unknown=0, NotChecked=0, Total=6006 [2024-11-18 09:30:33,457 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 78 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 78 states have internal predecessors, (110), 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 09:30:35,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:30:35,364 INFO L93 Difference]: Finished difference Result 245 states and 276 transitions. [2024-11-18 09:30:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-18 09:30:35,365 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 78 states have internal predecessors, (110), 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 42 [2024-11-18 09:30:35,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:30:35,366 INFO L225 Difference]: With dead ends: 245 [2024-11-18 09:30:35,366 INFO L226 Difference]: Without dead ends: 219 [2024-11-18 09:30:35,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3701 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=900, Invalid=9606, Unknown=0, NotChecked=0, Total=10506 [2024-11-18 09:30:35,368 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 161 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:30:35,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 779 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 09:30:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-18 09:30:35,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 109. [2024-11-18 09:30:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.1481481481481481) internal successors, (124), 108 states have internal predecessors, (124), 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 09:30:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2024-11-18 09:30:35,384 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 42 [2024-11-18 09:30:35,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:30:35,384 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2024-11-18 09:30:35,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 78 states have internal predecessors, (110), 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 09:30:35,384 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2024-11-18 09:30:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 09:30:35,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:30:35,387 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:30:35,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:30:35,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:35,591 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:30:35,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:30:35,591 INFO L85 PathProgramCache]: Analyzing trace with hash 523773584, now seen corresponding path program 2 times [2024-11-18 09:30:35,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:30:35,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328053856] [2024-11-18 09:30:35,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:30:35,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:30:35,608 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:30:35,608 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 09:30:35,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:30:35,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328053856] [2024-11-18 09:30:35,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328053856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:30:35,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756298351] [2024-11-18 09:30:35,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:30:35,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:35,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:30:35,696 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 09:30:35,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:30:35,770 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:30:35,771 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:35,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:30:35,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:30:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 09:30:35,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:30:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 09:30:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756298351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:30:35,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:30:35,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-18 09:30:35,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142761364] [2024-11-18 09:30:35,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:30:35,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:30:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:30:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:30:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:30:35,866 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 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 09:30:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:30:36,130 INFO L93 Difference]: Finished difference Result 196 states and 220 transitions. [2024-11-18 09:30:36,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:30:36,131 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 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 44 [2024-11-18 09:30:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:30:36,132 INFO L225 Difference]: With dead ends: 196 [2024-11-18 09:30:36,132 INFO L226 Difference]: Without dead ends: 123 [2024-11-18 09:30:36,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-18 09:30:36,134 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 128 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:30:36,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 124 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:30:36,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-18 09:30:36,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 89. [2024-11-18 09:30:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 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 09:30:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2024-11-18 09:30:36,149 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 44 [2024-11-18 09:30:36,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:30:36,149 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2024-11-18 09:30:36,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 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 09:30:36,149 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2024-11-18 09:30:36,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 09:30:36,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:30:36,151 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:30:36,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:30:36,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:36,352 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:30:36,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:30:36,352 INFO L85 PathProgramCache]: Analyzing trace with hash -954713592, now seen corresponding path program 3 times [2024-11-18 09:30:36,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:30:36,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735626997] [2024-11-18 09:30:36,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:30:36,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:30:36,379 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:30:36,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 09:30:36,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:30:36,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735626997] [2024-11-18 09:30:36,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735626997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:30:36,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736452314] [2024-11-18 09:30:36,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:30:36,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:36,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:30:36,465 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:30:36,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:30:36,538 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:30:36,538 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:36,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:30:36,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:30:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 09:30:36,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:30:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 09:30:36,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736452314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:30:36,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:30:36,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-18 09:30:36,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651322967] [2024-11-18 09:30:36,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:30:36,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:30:36,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:30:36,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:30:36,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:30:36,659 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:30:36,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:30:36,787 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2024-11-18 09:30:36,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:30:36,788 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-18 09:30:36,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:30:36,788 INFO L225 Difference]: With dead ends: 128 [2024-11-18 09:30:36,788 INFO L226 Difference]: Without dead ends: 74 [2024-11-18 09:30:36,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:30:36,790 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 84 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:30:36,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 62 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:30:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-18 09:30:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 51. [2024-11-18 09:30:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.12) internal successors, (56), 50 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:30:36,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2024-11-18 09:30:36,801 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 46 [2024-11-18 09:30:36,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:30:36,801 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2024-11-18 09:30:36,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:30:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2024-11-18 09:30:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 09:30:36,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:30:36,802 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:30:36,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 09:30:37,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:37,003 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:30:37,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:30:37,004 INFO L85 PathProgramCache]: Analyzing trace with hash 383514002, now seen corresponding path program 5 times [2024-11-18 09:30:37,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:30:37,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647212308] [2024-11-18 09:30:37,004 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:30:37,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:30:37,036 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 09:30:37,037 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:30:39,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:30:39,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647212308] [2024-11-18 09:30:39,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647212308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:30:39,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53359302] [2024-11-18 09:30:39,526 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:30:39,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:39,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:30:39,528 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:30:39,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:30:39,737 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 09:30:39,737 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:39,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-18 09:30:39,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:30:39,750 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 09:30:39,757 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 09:30:39,773 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 09:30:39,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:39,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-18 09:30:39,912 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 09:30:40,010 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 09:30:40,128 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:40,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-18 09:30:40,256 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 19 treesize of output 11 [2024-11-18 09:30:40,378 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 19 treesize of output 11 [2024-11-18 09:30:40,489 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 19 treesize of output 11 [2024-11-18 09:30:40,659 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 19 treesize of output 11 [2024-11-18 09:30:40,794 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 19 treesize of output 11 [2024-11-18 09:30:40,924 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 19 treesize of output 11 [2024-11-18 09:30:41,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:41,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-18 09:30:41,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:41,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 24 [2024-11-18 09:30:41,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:41,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-11-18 09:30:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:30:41,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:30:42,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 117 treesize of output 111 [2024-11-18 09:30:42,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:42,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20878 treesize of output 20238 [2024-11-18 09:30:43,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 98 treesize of output 92 [2024-11-18 09:30:43,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:43,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 11111 treesize of output 10471 [2024-11-18 09:30:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:30:43,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53359302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:30:43,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:30:43,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 36, 36] total 100 [2024-11-18 09:30:43,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432474180] [2024-11-18 09:30:43,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:30:43,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-11-18 09:30:43,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:30:43,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-11-18 09:30:43,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=9304, Unknown=0, NotChecked=0, Total=9900 [2024-11-18 09:30:43,484 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 100 states, 100 states have (on average 1.26) internal successors, (126), 100 states have internal predecessors, (126), 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 09:30:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:30:45,529 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2024-11-18 09:30:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-18 09:30:45,530 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.26) internal successors, (126), 100 states have internal predecessors, (126), 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 48 [2024-11-18 09:30:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:30:45,530 INFO L225 Difference]: With dead ends: 91 [2024-11-18 09:30:45,530 INFO L226 Difference]: Without dead ends: 89 [2024-11-18 09:30:45,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4740 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=881, Invalid=14125, Unknown=0, NotChecked=0, Total=15006 [2024-11-18 09:30:45,533 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 100 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 09:30:45,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 540 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 09:30:45,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-18 09:30:45,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2024-11-18 09:30:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 71 states have internal predecessors, (80), 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 09:30:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2024-11-18 09:30:45,543 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 48 [2024-11-18 09:30:45,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:30:45,543 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2024-11-18 09:30:45,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.26) internal successors, (126), 100 states have internal predecessors, (126), 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 09:30:45,544 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2024-11-18 09:30:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-18 09:30:45,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:30:45,544 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:30:45,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 09:30:45,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 09:30:45,745 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:30:45,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:30:45,745 INFO L85 PathProgramCache]: Analyzing trace with hash 686177872, now seen corresponding path program 6 times [2024-11-18 09:30:45,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:30:45,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185766956] [2024-11-18 09:30:45,745 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:30:45,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:30:45,772 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-18 09:30:45,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 09:30:45,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:30:45,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185766956] [2024-11-18 09:30:45,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185766956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:30:45,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069894021] [2024-11-18 09:30:45,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:30:45,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:45,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:30:45,862 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:30:45,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:30:46,060 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-18 09:30:46,060 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:46,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 09:30:46,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:30:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 09:30:46,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:30:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 09:30:46,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069894021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:30:46,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:30:46,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-18 09:30:46,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352903971] [2024-11-18 09:30:46,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:30:46,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 09:30:46,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:30:46,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 09:30:46,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-18 09:30:46,192 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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 09:30:46,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:30:46,415 INFO L93 Difference]: Finished difference Result 207 states and 229 transitions. [2024-11-18 09:30:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 09:30:46,415 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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 50 [2024-11-18 09:30:46,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:30:46,416 INFO L225 Difference]: With dead ends: 207 [2024-11-18 09:30:46,416 INFO L226 Difference]: Without dead ends: 150 [2024-11-18 09:30:46,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 90 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-18 09:30:46,417 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 156 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:30:46,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 97 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:30:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-18 09:30:46,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 115. [2024-11-18 09:30:46,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 114 states have internal predecessors, (127), 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 09:30:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2024-11-18 09:30:46,443 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 50 [2024-11-18 09:30:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:30:46,444 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2024-11-18 09:30:46,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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 09:30:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2024-11-18 09:30:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 09:30:46,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:30:46,445 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:30:46,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 09:30:46,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:46,645 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:30:46,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:30:46,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1092470520, now seen corresponding path program 4 times [2024-11-18 09:30:46,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:30:46,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046090601] [2024-11-18 09:30:46,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:30:46,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:30:46,670 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:30:46,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 09:30:47,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:30:47,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046090601] [2024-11-18 09:30:47,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046090601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:30:47,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647405924] [2024-11-18 09:30:47,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:30:47,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:30:47,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:30:47,726 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:30:47,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:30:47,796 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:30:47,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:30:47,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-18 09:30:47,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:30:47,805 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 15 treesize of output 11 [2024-11-18 09:30:47,811 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 28 treesize of output 27 [2024-11-18 09:30:47,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:47,858 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 1 case distinctions, treesize of input 48 treesize of output 31 [2024-11-18 09:30:48,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:48,282 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 1 case distinctions, treesize of input 34 treesize of output 29 [2024-11-18 09:30:48,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 33 treesize of output 25 [2024-11-18 09:30:48,352 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:30:48,352 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 1 case distinctions, treesize of input 27 treesize of output 20 [2024-11-18 09:30:48,421 INFO L349 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2024-11-18 09:30:48,421 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 3 case distinctions, treesize of input 37 treesize of output 20 [2024-11-18 09:30:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 09:30:48,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:30:53,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 128 treesize of output 112 [2024-11-18 09:31:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:31:44,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647405924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:31:44,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:31:44,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27, 26] total 73 [2024-11-18 09:31:44,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132789877] [2024-11-18 09:31:44,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:31:44,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-18 09:31:44,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:31:44,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-18 09:31:44,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=4490, Unknown=11, NotChecked=0, Total=5256 [2024-11-18 09:31:44,479 INFO L87 Difference]: Start difference. First operand 115 states and 127 transitions. Second operand has 73 states, 73 states have (on average 1.6575342465753424) internal successors, (121), 73 states have internal predecessors, (121), 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 09:31:50,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:31:50,898 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2024-11-18 09:31:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 09:31:50,899 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.6575342465753424) internal successors, (121), 73 states have internal predecessors, (121), 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 52 [2024-11-18 09:31:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:31:50,900 INFO L225 Difference]: With dead ends: 148 [2024-11-18 09:31:50,900 INFO L226 Difference]: Without dead ends: 146 [2024-11-18 09:31:50,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3335 ImplicationChecksByTransitivity, 61.0s TimeCoverageRelationStatistics Valid=1590, Invalid=8905, Unknown=11, NotChecked=0, Total=10506 [2024-11-18 09:31:50,901 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 336 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 09:31:50,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 259 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 09:31:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-18 09:31:50,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 122. [2024-11-18 09:31:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.115702479338843) internal successors, (135), 121 states have internal predecessors, (135), 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 09:31:50,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2024-11-18 09:31:50,925 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 52 [2024-11-18 09:31:50,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:31:50,925 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2024-11-18 09:31:50,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.6575342465753424) internal successors, (121), 73 states have internal predecessors, (121), 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 09:31:50,926 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2024-11-18 09:31:50,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 09:31:50,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:31:50,926 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:31:50,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 09:31:51,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 09:31:51,127 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:31:51,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:31:51,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1284576564, now seen corresponding path program 7 times [2024-11-18 09:31:51,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:31:51,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880221705] [2024-11-18 09:31:51,127 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:31:51,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:31:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:31:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 09:31:51,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:31:51,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880221705] [2024-11-18 09:31:51,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880221705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:31:51,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283647779] [2024-11-18 09:31:51,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:31:51,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:31:51,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:31:51,242 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:31:51,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:31:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:31:51,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 09:31:51,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:31:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 09:31:51,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:31:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 09:31:51,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283647779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:31:51,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:31:51,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-18 09:31:51,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510920786] [2024-11-18 09:31:51,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:31:51,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 09:31:51,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:31:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 09:31:51,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-18 09:31:51,492 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 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)