./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs5.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 908db381a067cd65920e47aeaa3ff4913a67de2048af6864f01f76e8ca691571 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 22:29:44,229 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 22:29:44,309 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 22:29:44,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 22:29:44,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 22:29:44,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 22:29:44,350 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 22:29:44,350 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 22:29:44,351 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 22:29:44,352 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 22:29:44,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 22:29:44,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 22:29:44,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 22:29:44,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 22:29:44,358 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 22:29:44,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 22:29:44,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 22:29:44,360 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 22:29:44,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 22:29:44,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 22:29:44,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 22:29:44,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 22:29:44,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 22:29:44,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 22:29:44,362 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 22:29:44,362 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 22:29:44,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 22:29:44,362 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 22:29:44,363 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 22:29:44,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 22:29:44,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 22:29:44,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 22:29:44,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:29:44,364 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 22:29:44,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 22:29:44,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 22:29:44,365 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 22:29:44,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 22:29:44,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 22:29:44,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 22:29:44,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 22:29:44,366 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 22:29:44,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908db381a067cd65920e47aeaa3ff4913a67de2048af6864f01f76e8ca691571 [2024-10-13 22:29:44,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 22:29:44,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 22:29:44,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 22:29:44,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 22:29:44,634 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 22:29:44,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs5.c [2024-10-13 22:29:46,066 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 22:29:46,237 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 22:29:46,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs5.c [2024-10-13 22:29:46,245 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f31ef41/273126a69b764bc7b935b7718e358aaa/FLAGe64d4a085 [2024-10-13 22:29:46,260 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f31ef41/273126a69b764bc7b935b7718e358aaa [2024-10-13 22:29:46,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 22:29:46,264 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 22:29:46,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 22:29:46,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 22:29:46,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 22:29:46,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a0daa2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46, skipping insertion in model container [2024-10-13 22:29:46,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,294 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 22:29:46,457 WARN L248 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/brs5.c[587,600] [2024-10-13 22:29:46,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:29:46,485 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 22:29:46,495 WARN L248 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/brs5.c[587,600] [2024-10-13 22:29:46,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:29:46,516 INFO L204 MainTranslator]: Completed translation [2024-10-13 22:29:46,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46 WrapperNode [2024-10-13 22:29:46,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 22:29:46,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 22:29:46,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 22:29:46,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 22:29:46,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,550 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2024-10-13 22:29:46,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 22:29:46,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 22:29:46,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 22:29:46,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 22:29:46,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,575 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 3, 7, 4]. 44 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 0, 7, 0]. The 4 writes are split as follows [0, 2, 0, 2]. [2024-10-13 22:29:46,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,585 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 22:29:46,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 22:29:46,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 22:29:46,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 22:29:46,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (1/1) ... [2024-10-13 22:29:46,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:29:46,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:29:46,619 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) [2024-10-13 22:29:46,621 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 [2024-10-13 22:29:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 22:29:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 22:29:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 22:29:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 22:29:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 22:29:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 22:29:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 22:29:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 22:29:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 22:29:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 22:29:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 22:29:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 22:29:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 22:29:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 22:29:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 22:29:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 22:29:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 22:29:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 22:29:46,742 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 22:29:46,744 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 22:29:46,873 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-13 22:29:46,873 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 22:29:46,896 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 22:29:46,896 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 22:29:46,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:29:46 BoogieIcfgContainer [2024-10-13 22:29:46,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 22:29:46,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 22:29:46,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 22:29:46,918 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 22:29:46,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:29:46" (1/3) ... [2024-10-13 22:29:46,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a28ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:29:46, skipping insertion in model container [2024-10-13 22:29:46,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:46" (2/3) ... [2024-10-13 22:29:46,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a28ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:29:46, skipping insertion in model container [2024-10-13 22:29:46,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:29:46" (3/3) ... [2024-10-13 22:29:46,922 INFO L112 eAbstractionObserver]: Analyzing ICFG brs5.c [2024-10-13 22:29:46,938 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 22:29:46,939 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 22:29:47,006 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 22:29:47,016 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;@58ac9d20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 22:29:47,016 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 22:29:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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) [2024-10-13 22:29:47,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-13 22:29:47,027 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:47,027 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:47,028 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:47,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1256235845, now seen corresponding path program 1 times [2024-10-13 22:29:47,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:47,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654496402] [2024-10-13 22:29:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:47,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:47,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654496402] [2024-10-13 22:29:47,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654496402] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:29:47,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:29:47,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:29:47,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085781341] [2024-10-13 22:29:47,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:29:47,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 22:29:47,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:47,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 22:29:47,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:29:47,215 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-10-13 22:29:47,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:47,234 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2024-10-13 22:29:47,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 22:29:47,237 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2024-10-13 22:29:47,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:47,243 INFO L225 Difference]: With dead ends: 33 [2024-10-13 22:29:47,243 INFO L226 Difference]: Without dead ends: 15 [2024-10-13 22:29:47,246 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 [2024-10-13 22:29:47,249 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:47,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:29:47,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-13 22:29:47,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-13 22:29:47,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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) [2024-10-13 22:29:47,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-10-13 22:29:47,276 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2024-10-13 22:29:47,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:47,277 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-10-13 22:29:47,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-10-13 22:29:47,277 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-10-13 22:29:47,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-13 22:29:47,278 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:47,278 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:47,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 22:29:47,278 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:47,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:47,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2065910172, now seen corresponding path program 1 times [2024-10-13 22:29:47,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:47,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434886201] [2024-10-13 22:29:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:47,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:47,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:47,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434886201] [2024-10-13 22:29:47,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434886201] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:29:47,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:29:47,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 22:29:47,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813657889] [2024-10-13 22:29:47,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:29:47,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:29:47,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:47,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:29:47,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:29:47,501 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-10-13 22:29:47,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:47,604 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2024-10-13 22:29:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:29:47,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2024-10-13 22:29:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:47,606 INFO L225 Difference]: With dead ends: 32 [2024-10-13 22:29:47,607 INFO L226 Difference]: Without dead ends: 21 [2024-10-13 22:29:47,608 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 [2024-10-13 22:29:47,609 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:47,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 10 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:29:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-13 22:29:47,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-10-13 22:29:47,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-10-13 22:29:47,617 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2024-10-13 22:29:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:47,617 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-10-13 22:29:47,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-10-13 22:29:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-10-13 22:29:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-13 22:29:47,619 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:47,619 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:47,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 22:29:47,619 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:47,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:47,620 INFO L85 PathProgramCache]: Analyzing trace with hash 785079709, now seen corresponding path program 1 times [2024-10-13 22:29:47,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:47,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065367226] [2024-10-13 22:29:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:47,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 22:29:47,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:47,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065367226] [2024-10-13 22:29:47,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065367226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:29:47,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:29:47,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 22:29:47,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5586055] [2024-10-13 22:29:47,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:29:47,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 22:29:47,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:47,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 22:29:47,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:29:47,903 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:47,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:47,955 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-10-13 22:29:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 22:29:47,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-13 22:29:47,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:47,956 INFO L225 Difference]: With dead ends: 26 [2024-10-13 22:29:47,956 INFO L226 Difference]: Without dead ends: 22 [2024-10-13 22:29:47,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-13 22:29:47,958 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:47,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 27 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:29:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-13 22:29:47,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-10-13 22:29:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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) [2024-10-13 22:29:47,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-10-13 22:29:47,963 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 16 [2024-10-13 22:29:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:47,963 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-10-13 22:29:47,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-10-13 22:29:47,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-13 22:29:47,964 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:47,965 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:47,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 22:29:47,965 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:47,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:47,965 INFO L85 PathProgramCache]: Analyzing trace with hash -485999892, now seen corresponding path program 1 times [2024-10-13 22:29:47,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:47,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574642777] [2024-10-13 22:29:47,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:47,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:48,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:48,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574642777] [2024-10-13 22:29:48,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574642777] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:29:48,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873345694] [2024-10-13 22:29:48,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:48,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:48,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:29:48,093 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) [2024-10-13 22:29:48,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 22:29:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:48,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 22:29:48,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:29:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:48,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:29:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:48,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873345694] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:29:48,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:29:48,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 22:29:48,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715547378] [2024-10-13 22:29:48,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:29:48,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 22:29:48,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:48,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 22:29:48,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-13 22:29:48,333 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:48,442 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2024-10-13 22:29:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 22:29:48,443 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-13 22:29:48,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:48,444 INFO L225 Difference]: With dead ends: 42 [2024-10-13 22:29:48,445 INFO L226 Difference]: Without dead ends: 28 [2024-10-13 22:29:48,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-13 22:29:48,448 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:48,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 26 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:29:48,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-13 22:29:48,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2024-10-13 22:29:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-10-13 22:29:48,456 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 19 [2024-10-13 22:29:48,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:48,456 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-10-13 22:29:48,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-10-13 22:29:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-13 22:29:48,458 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:48,458 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:48,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 22:29:48,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:48,659 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:48,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:48,660 INFO L85 PathProgramCache]: Analyzing trace with hash -105964608, now seen corresponding path program 1 times [2024-10-13 22:29:48,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:48,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962230680] [2024-10-13 22:29:48,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:48,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:49,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:49,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962230680] [2024-10-13 22:29:49,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962230680] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:29:49,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739044331] [2024-10-13 22:29:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:49,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:49,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:29:49,205 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) [2024-10-13 22:29:49,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 22:29:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:49,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-13 22:29:49,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:29:49,348 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 1 [2024-10-13 22:29:49,433 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 [2024-10-13 22:29:49,540 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 23 treesize of output 3 [2024-10-13 22:29:49,546 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 19 treesize of output 11 [2024-10-13 22:29:49,610 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 15 treesize of output 7 [2024-10-13 22:29:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:49,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:29:49,797 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 20 treesize of output 18 [2024-10-13 22:29:49,802 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 28 treesize of output 24 [2024-10-13 22:29:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:49,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739044331] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:29:49,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:29:49,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-10-13 22:29:49,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721252782] [2024-10-13 22:29:49,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:29:49,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 22:29:49,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:49,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 22:29:49,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-10-13 22:29:49,876 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 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) [2024-10-13 22:29:50,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:50,107 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2024-10-13 22:29:50,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 22:29:50,107 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 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 22 [2024-10-13 22:29:50,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:50,109 INFO L225 Difference]: With dead ends: 49 [2024-10-13 22:29:50,110 INFO L226 Difference]: Without dead ends: 29 [2024-10-13 22:29:50,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2024-10-13 22:29:50,111 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:50,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 47 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:29:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-13 22:29:50,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-10-13 22:29:50,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 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) [2024-10-13 22:29:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-10-13 22:29:50,120 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2024-10-13 22:29:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:50,121 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-10-13 22:29:50,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 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) [2024-10-13 22:29:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-10-13 22:29:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-13 22:29:50,122 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:50,122 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:50,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 22:29:50,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:50,323 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:50,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1605608937, now seen corresponding path program 2 times [2024-10-13 22:29:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:50,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215671212] [2024-10-13 22:29:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:50,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:50,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:50,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215671212] [2024-10-13 22:29:50,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215671212] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:29:50,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77717075] [2024-10-13 22:29:50,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:29:50,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:50,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:29:50,448 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) [2024-10-13 22:29:50,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 22:29:50,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:29:50,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:29:50,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 22:29:50,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:29:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:50,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:29:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:50,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77717075] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:29:50,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:29:50,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-13 22:29:50,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341081126] [2024-10-13 22:29:50,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:29:50,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 22:29:50,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:50,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 22:29:50,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 22:29:50,645 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:50,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:50,740 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-10-13 22:29:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 22:29:50,740 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-13 22:29:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:50,741 INFO L225 Difference]: With dead ends: 56 [2024-10-13 22:29:50,741 INFO L226 Difference]: Without dead ends: 36 [2024-10-13 22:29:50,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-13 22:29:50,742 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:50,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 33 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:29:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-13 22:29:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-10-13 22:29:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.1875) internal successors, (38), 32 states have internal predecessors, (38), 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) [2024-10-13 22:29:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-10-13 22:29:50,747 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 25 [2024-10-13 22:29:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:50,748 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-10-13 22:29:50,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-10-13 22:29:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-13 22:29:50,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:50,749 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:50,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 22:29:50,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:50,949 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:50,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:50,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1537501251, now seen corresponding path program 3 times [2024-10-13 22:29:50,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:50,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863884369] [2024-10-13 22:29:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:50,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:51,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:51,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863884369] [2024-10-13 22:29:51,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863884369] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:29:51,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548433342] [2024-10-13 22:29:51,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:29:51,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:29:51,947 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) [2024-10-13 22:29:51,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 22:29:52,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-13 22:29:52,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:29:52,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-13 22:29:52,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:29:52,095 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 1 [2024-10-13 22:29:52,158 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 23 treesize of output 11 [2024-10-13 22:29:52,240 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 [2024-10-13 22:29:52,328 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 23 treesize of output 3 [2024-10-13 22:29:52,451 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 44 treesize of output 21 [2024-10-13 22:29:52,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:29:52,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 32 treesize of output 16 [2024-10-13 22:29:52,508 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 15 treesize of output 7 [2024-10-13 22:29:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:52,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:29:52,937 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 47 treesize of output 43 [2024-10-13 22:29:52,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:29:52,947 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 1038 treesize of output 910 [2024-10-13 22:29:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:53,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548433342] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:29:53,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:29:53,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 44 [2024-10-13 22:29:53,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825326113] [2024-10-13 22:29:53,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:29:53,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-13 22:29:53,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:53,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-13 22:29:53,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1639, Unknown=0, NotChecked=0, Total=1892 [2024-10-13 22:29:53,031 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 44 states, 44 states have (on average 1.75) internal successors, (77), 44 states have internal predecessors, (77), 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) [2024-10-13 22:29:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:53,539 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2024-10-13 22:29:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 22:29:53,540 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.75) internal successors, (77), 44 states have internal predecessors, (77), 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 [2024-10-13 22:29:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:53,540 INFO L225 Difference]: With dead ends: 61 [2024-10-13 22:29:53,541 INFO L226 Difference]: Without dead ends: 35 [2024-10-13 22:29:53,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=363, Invalid=2187, Unknown=0, NotChecked=0, Total=2550 [2024-10-13 22:29:53,542 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 93 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:53,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 81 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 22:29:53,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-10-13 22:29:53,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-10-13 22:29:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.125) internal successors, (36), 32 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) [2024-10-13 22:29:53,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-10-13 22:29:53,547 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2024-10-13 22:29:53,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:53,547 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-10-13 22:29:53,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.75) internal successors, (77), 44 states have internal predecessors, (77), 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) [2024-10-13 22:29:53,548 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-10-13 22:29:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-13 22:29:53,548 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:53,548 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:53,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 22:29:53,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:53,749 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:53,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:53,750 INFO L85 PathProgramCache]: Analyzing trace with hash -572240692, now seen corresponding path program 4 times [2024-10-13 22:29:53,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:53,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824304354] [2024-10-13 22:29:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:53,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:53,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:53,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824304354] [2024-10-13 22:29:53,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824304354] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:29:53,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195175551] [2024-10-13 22:29:53,905 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:29:53,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:53,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:29:53,907 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) [2024-10-13 22:29:53,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 22:29:53,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:29:53,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:29:53,979 WARN L253 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-13 22:29:53,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:29:53,990 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 [2024-10-13 22:29:54,024 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 36 treesize of output 16 [2024-10-13 22:29:54,101 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 0 case distinctions, treesize of input 48 treesize of output 31 [2024-10-13 22:29:54,274 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 [2024-10-13 22:29:54,392 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 23 treesize of output 3 [2024-10-13 22:29:54,526 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 53 treesize of output 30 [2024-10-13 22:29:54,818 INFO L349 Elim1Store]: treesize reduction 26, result has 70.1 percent of original size [2024-10-13 22:29:54,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 85 treesize of output 92 [2024-10-13 22:29:54,832 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 38 treesize of output 15 [2024-10-13 22:29:55,079 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 15 treesize of output 7 [2024-10-13 22:29:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:55,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:29:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:56,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195175551] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:29:56,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:29:56,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 22] total 50 [2024-10-13 22:29:56,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470673593] [2024-10-13 22:29:56,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:29:56,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-13 22:29:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:56,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-13 22:29:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=2155, Unknown=0, NotChecked=0, Total=2450 [2024-10-13 22:29:56,114 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 50 states, 50 states have (on average 1.64) internal successors, (82), 50 states have internal predecessors, (82), 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) [2024-10-13 22:30:01,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:30:01,595 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2024-10-13 22:30:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-10-13 22:30:01,596 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.64) internal successors, (82), 50 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-13 22:30:01,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:30:01,598 INFO L225 Difference]: With dead ends: 159 [2024-10-13 22:30:01,598 INFO L226 Difference]: Without dead ends: 118 [2024-10-13 22:30:01,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6627 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2710, Invalid=18752, Unknown=0, NotChecked=0, Total=21462 [2024-10-13 22:30:01,609 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 208 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:30:01,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 147 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 22:30:01,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-10-13 22:30:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2024-10-13 22:30:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2473118279569892) internal successors, (116), 93 states have internal predecessors, (116), 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) [2024-10-13 22:30:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 116 transitions. [2024-10-13 22:30:01,636 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 116 transitions. Word has length 31 [2024-10-13 22:30:01,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:30:01,636 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 116 transitions. [2024-10-13 22:30:01,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.64) internal successors, (82), 50 states have internal predecessors, (82), 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) [2024-10-13 22:30:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 116 transitions. [2024-10-13 22:30:01,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-13 22:30:01,638 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:30:01,638 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:30:01,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 22:30:01,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:01,838 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:30:01,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:30:01,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1590483447, now seen corresponding path program 5 times [2024-10-13 22:30:01,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:30:01,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412126690] [2024-10-13 22:30:01,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:30:01,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:30:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:30:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:02,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:30:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412126690] [2024-10-13 22:30:02,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412126690] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:30:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322819289] [2024-10-13 22:30:02,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:30:02,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:02,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:30:02,020 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) [2024-10-13 22:30:02,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 22:30:02,112 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-10-13 22:30:02,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:30:02,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 22:30:02,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:30:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:02,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:30:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:02,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322819289] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:30:02,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:30:02,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-10-13 22:30:02,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528909828] [2024-10-13 22:30:02,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:30:02,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 22:30:02,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:30:02,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 22:30:02,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-10-13 22:30:02,307 INFO L87 Difference]: Start difference. First operand 94 states and 116 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:30:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:30:02,449 INFO L93 Difference]: Finished difference Result 214 states and 262 transitions. [2024-10-13 22:30:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 22:30:02,450 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-13 22:30:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:30:02,451 INFO L225 Difference]: With dead ends: 214 [2024-10-13 22:30:02,451 INFO L226 Difference]: Without dead ends: 143 [2024-10-13 22:30:02,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-10-13 22:30:02,452 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 46 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:30:02,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 17 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:30:02,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-10-13 22:30:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 129. [2024-10-13 22:30:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.2421875) internal successors, (159), 128 states have internal predecessors, (159), 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) [2024-10-13 22:30:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 159 transitions. [2024-10-13 22:30:02,472 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 159 transitions. Word has length 37 [2024-10-13 22:30:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:30:02,472 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 159 transitions. [2024-10-13 22:30:02,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:30:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 159 transitions. [2024-10-13 22:30:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-13 22:30:02,473 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:30:02,473 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:30:02,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 22:30:02,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:02,678 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:30:02,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:30:02,678 INFO L85 PathProgramCache]: Analyzing trace with hash -33439858, now seen corresponding path program 6 times [2024-10-13 22:30:02,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:30:02,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875488510] [2024-10-13 22:30:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:30:02,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:30:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:30:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:02,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:30:02,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875488510] [2024-10-13 22:30:02,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875488510] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:30:02,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999212555] [2024-10-13 22:30:02,862 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:30:02,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:02,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:30:02,864 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) [2024-10-13 22:30:02,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 22:30:03,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-10-13 22:30:03,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:30:03,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 22:30:03,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:30:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:03,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:30:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:03,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999212555] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:30:03,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:30:03,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-10-13 22:30:03,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91580761] [2024-10-13 22:30:03,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:30:03,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 22:30:03,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:30:03,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 22:30:03,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-10-13 22:30:03,239 INFO L87 Difference]: Start difference. First operand 129 states and 159 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 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) [2024-10-13 22:30:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:30:03,455 INFO L93 Difference]: Finished difference Result 183 states and 224 transitions. [2024-10-13 22:30:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 22:30:03,455 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 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 37 [2024-10-13 22:30:03,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:30:03,456 INFO L225 Difference]: With dead ends: 183 [2024-10-13 22:30:03,456 INFO L226 Difference]: Without dead ends: 126 [2024-10-13 22:30:03,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2024-10-13 22:30:03,457 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 39 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:30:03,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 32 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:30:03,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-10-13 22:30:03,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 48. [2024-10-13 22:30:03,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 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) [2024-10-13 22:30:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-10-13 22:30:03,469 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 37 [2024-10-13 22:30:03,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:30:03,470 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-10-13 22:30:03,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 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) [2024-10-13 22:30:03,470 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-10-13 22:30:03,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-13 22:30:03,471 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:30:03,471 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:30:03,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 22:30:03,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:03,672 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:30:03,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:30:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash 16447965, now seen corresponding path program 7 times [2024-10-13 22:30:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:30:03,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982851182] [2024-10-13 22:30:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:30:03,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:30:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:30:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:05,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:30:05,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982851182] [2024-10-13 22:30:05,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982851182] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:30:05,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186789857] [2024-10-13 22:30:05,326 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 22:30:05,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:05,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:30:05,328 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) [2024-10-13 22:30:05,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 22:30:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:30:05,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-10-13 22:30:05,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:30:05,436 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 1 [2024-10-13 22:30:05,502 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 23 treesize of output 11 [2024-10-13 22:30:05,571 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 0 case distinctions, treesize of input 30 treesize of output 21 [2024-10-13 22:30:05,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-10-13 22:30:05,788 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 [2024-10-13 22:30:05,933 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 23 treesize of output 3 [2024-10-13 22:30:06,050 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 44 treesize of output 21 [2024-10-13 22:30:06,166 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 50 treesize of output 27 [2024-10-13 22:30:06,289 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 55 treesize of output 32 [2024-10-13 22:30:06,293 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:30:06,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 24 [2024-10-13 22:30:06,336 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 15 treesize of output 7 [2024-10-13 22:30:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:06,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:30:07,451 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 159 treesize of output 151 [2024-10-13 22:30:07,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:30:07,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1515710454 treesize of output 1448601590 [2024-10-13 22:30:08,363 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:08,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186789857] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:30:08,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:30:08,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 63 [2024-10-13 22:30:08,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423597008] [2024-10-13 22:30:08,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:30:08,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-10-13 22:30:08,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:30:08,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-10-13 22:30:08,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=3411, Unknown=0, NotChecked=0, Total=3906 [2024-10-13 22:30:08,366 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 63 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 63 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:30:10,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:30:10,068 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2024-10-13 22:30:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-13 22:30:10,068 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 63 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-13 22:30:10,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:30:10,069 INFO L225 Difference]: With dead ends: 85 [2024-10-13 22:30:10,069 INFO L226 Difference]: Without dead ends: 47 [2024-10-13 22:30:10,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=772, Invalid=5390, Unknown=0, NotChecked=0, Total=6162 [2024-10-13 22:30:10,072 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 107 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 22:30:10,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 108 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 22:30:10,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-13 22:30:10,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2024-10-13 22:30:10,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 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) [2024-10-13 22:30:10,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2024-10-13 22:30:10,085 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 40 [2024-10-13 22:30:10,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:30:10,085 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2024-10-13 22:30:10,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 63 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:30:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2024-10-13 22:30:10,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-13 22:30:10,086 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:30:10,086 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:30:10,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 22:30:10,286 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,SelfDestructingSolverStorable10 [2024-10-13 22:30:10,287 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:30:10,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:30:10,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1971336876, now seen corresponding path program 8 times [2024-10-13 22:30:10,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:30:10,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673113666] [2024-10-13 22:30:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:30:10,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:30:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:30:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:10,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:30:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673113666] [2024-10-13 22:30:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673113666] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:30:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568541536] [2024-10-13 22:30:10,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:30:10,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:10,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:30:10,494 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) [2024-10-13 22:30:10,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 22:30:10,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:30:10,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:30:10,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 22:30:10,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:30:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:10,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:30:10,884 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:10,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568541536] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:30:10,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:30:10,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-13 22:30:10,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067559621] [2024-10-13 22:30:10,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:30:10,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 22:30:10,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:30:10,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 22:30:10,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-10-13 22:30:10,886 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 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) [2024-10-13 22:30:11,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:30:11,060 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2024-10-13 22:30:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 22:30:11,060 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 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 43 [2024-10-13 22:30:11,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:30:11,061 INFO L225 Difference]: With dead ends: 75 [2024-10-13 22:30:11,061 INFO L226 Difference]: Without dead ends: 51 [2024-10-13 22:30:11,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 67 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-10-13 22:30:11,062 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 43 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:30:11,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 25 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:30:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-13 22:30:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2024-10-13 22:30:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 states have internal predecessors, (51), 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) [2024-10-13 22:30:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2024-10-13 22:30:11,073 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 43 [2024-10-13 22:30:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:30:11,074 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2024-10-13 22:30:11,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 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) [2024-10-13 22:30:11,074 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2024-10-13 22:30:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-13 22:30:11,075 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:30:11,075 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:30:11,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 22:30:11,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:11,275 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:30:11,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:30:11,276 INFO L85 PathProgramCache]: Analyzing trace with hash 835990850, now seen corresponding path program 9 times [2024-10-13 22:30:11,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:30:11,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833254040] [2024-10-13 22:30:11,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:30:11,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:30:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:30:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:13,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:30:13,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833254040] [2024-10-13 22:30:13,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833254040] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:30:13,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232752969] [2024-10-13 22:30:13,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:30:13,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:13,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:30:13,613 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) [2024-10-13 22:30:13,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 22:30:13,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-13 22:30:13,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:30:13,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-10-13 22:30:13,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:30:13,754 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 1 [2024-10-13 22:30:13,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:13,823 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 27 treesize of output 11 [2024-10-13 22:30:13,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:13,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:13,924 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 0 case distinctions, treesize of input 38 treesize of output 25 [2024-10-13 22:30:14,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:14,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:14,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:14,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2024-10-13 22:30:14,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:14,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:14,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:14,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:14,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:30:14,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 62 [2024-10-13 22:30:14,442 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 [2024-10-13 22:30:14,574 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 23 treesize of output 3 [2024-10-13 22:30:14,669 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 46 treesize of output 23 [2024-10-13 22:30:14,815 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 56 treesize of output 33 [2024-10-13 22:30:15,011 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 65 treesize of output 42 [2024-10-13 22:30:15,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:15,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:15,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:15,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:15,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:15,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:15,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:15,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:15,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:15,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:15,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:30:15,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 110 treesize of output 172 [2024-10-13 22:30:15,391 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 40 treesize of output 17 [2024-10-13 22:30:16,356 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 15 treesize of output 7 [2024-10-13 22:30:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 15 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:16,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:30:18,162 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 55 treesize of output 53 [2024-10-13 22:30:18,170 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 44634 treesize of output 44378 [2024-10-13 22:30:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:18,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232752969] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:30:18,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:30:18,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 31, 31] total 83 [2024-10-13 22:30:18,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661642512] [2024-10-13 22:30:18,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:30:18,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-10-13 22:30:18,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:30:18,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-10-13 22:30:18,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=714, Invalid=6092, Unknown=0, NotChecked=0, Total=6806 [2024-10-13 22:30:18,333 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 83 states, 83 states have (on average 1.4939759036144578) internal successors, (124), 83 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) [2024-10-13 22:30:31,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:30:31,268 INFO L93 Difference]: Finished difference Result 159 states and 187 transitions. [2024-10-13 22:30:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-10-13 22:30:31,269 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.4939759036144578) internal successors, (124), 83 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) Word has length 46 [2024-10-13 22:30:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:30:31,270 INFO L225 Difference]: With dead ends: 159 [2024-10-13 22:30:31,270 INFO L226 Difference]: Without dead ends: 152 [2024-10-13 22:30:31,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11166 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=3551, Invalid=31231, Unknown=0, NotChecked=0, Total=34782 [2024-10-13 22:30:31,281 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 434 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 1900 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 1900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:30:31,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 126 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 1900 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-13 22:30:31,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-10-13 22:30:31,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 83. [2024-10-13 22:30:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 82 states have internal predecessors, (100), 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) [2024-10-13 22:30:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2024-10-13 22:30:31,317 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 46 [2024-10-13 22:30:31,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:30:31,317 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2024-10-13 22:30:31,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.4939759036144578) internal successors, (124), 83 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) [2024-10-13 22:30:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2024-10-13 22:30:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-13 22:30:31,318 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:30:31,318 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:30:31,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-13 22:30:31,518 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,SelfDestructingSolverStorable12 [2024-10-13 22:30:31,519 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:30:31,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:30:31,519 INFO L85 PathProgramCache]: Analyzing trace with hash 212107079, now seen corresponding path program 10 times [2024-10-13 22:30:31,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:30:31,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900170415] [2024-10-13 22:30:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:30:31,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:30:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:30:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 95 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:30:31,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900170415] [2024-10-13 22:30:31,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900170415] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:30:31,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010044974] [2024-10-13 22:30:31,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:30:31,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:31,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:30:31,812 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) [2024-10-13 22:30:31,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 22:30:31,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:30:31,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:30:31,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-13 22:30:31,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:30:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 11 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:32,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:30:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 11 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:33,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010044974] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:30:33,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:30:33,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 22] total 59 [2024-10-13 22:30:33,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849695805] [2024-10-13 22:30:33,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:30:33,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-10-13 22:30:33,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:30:33,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-10-13 22:30:33,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=2836, Unknown=0, NotChecked=0, Total=3422 [2024-10-13 22:30:33,171 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand has 59 states, 59 states have (on average 2.559322033898305) internal successors, (151), 59 states have internal predecessors, (151), 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) [2024-10-13 22:30:36,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:30:36,019 INFO L93 Difference]: Finished difference Result 257 states and 301 transitions. [2024-10-13 22:30:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-10-13 22:30:36,019 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.559322033898305) internal successors, (151), 59 states have internal predecessors, (151), 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 55 [2024-10-13 22:30:36,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:30:36,020 INFO L225 Difference]: With dead ends: 257 [2024-10-13 22:30:36,020 INFO L226 Difference]: Without dead ends: 204 [2024-10-13 22:30:36,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6759 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3257, Invalid=17623, Unknown=0, NotChecked=0, Total=20880 [2024-10-13 22:30:36,023 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 358 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 22:30:36,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 122 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 22:30:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-10-13 22:30:36,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 139. [2024-10-13 22:30:36,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.1304347826086956) internal successors, (156), 138 states have internal predecessors, (156), 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) [2024-10-13 22:30:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2024-10-13 22:30:36,090 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 55 [2024-10-13 22:30:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:30:36,091 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2024-10-13 22:30:36,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.559322033898305) internal successors, (151), 59 states have internal predecessors, (151), 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) [2024-10-13 22:30:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2024-10-13 22:30:36,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-13 22:30:36,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:30:36,107 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:30:36,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 22:30:36,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 22:30:36,312 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:30:36,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:30:36,312 INFO L85 PathProgramCache]: Analyzing trace with hash -177586966, now seen corresponding path program 11 times [2024-10-13 22:30:36,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:30:36,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058277513] [2024-10-13 22:30:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:30:36,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:30:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:30:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 120 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:36,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:30:36,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058277513] [2024-10-13 22:30:36,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058277513] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:30:36,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939641877] [2024-10-13 22:30:36,625 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:30:36,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:36,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:30:36,626 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:30:36,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 22:30:36,825 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-13 22:30:36,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:30:36,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 22:30:36,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:30:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 145 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:37,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:30:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 128 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:37,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939641877] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:30:37,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:30:37,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 38 [2024-10-13 22:30:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567227414] [2024-10-13 22:30:37,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:30:37,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-13 22:30:37,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:30:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-13 22:30:37,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2024-10-13 22:30:37,304 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 38 states, 38 states have (on average 3.026315789473684) internal successors, (115), 38 states have internal predecessors, (115), 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) [2024-10-13 22:30:37,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:30:37,697 INFO L93 Difference]: Finished difference Result 300 states and 330 transitions. [2024-10-13 22:30:37,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-13 22:30:37,697 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.026315789473684) internal successors, (115), 38 states have internal predecessors, (115), 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 61 [2024-10-13 22:30:37,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:30:37,698 INFO L225 Difference]: With dead ends: 300 [2024-10-13 22:30:37,698 INFO L226 Difference]: Without dead ends: 235 [2024-10-13 22:30:37,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 93 SyntacticMatches, 12 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=671, Invalid=2299, Unknown=0, NotChecked=0, Total=2970 [2024-10-13 22:30:37,699 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 130 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:30:37,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 33 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:30:37,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-10-13 22:30:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 182. [2024-10-13 22:30:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.12707182320442) internal successors, (204), 181 states have internal predecessors, (204), 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) [2024-10-13 22:30:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 204 transitions. [2024-10-13 22:30:37,766 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 204 transitions. Word has length 61 [2024-10-13 22:30:37,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:30:37,766 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 204 transitions. [2024-10-13 22:30:37,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.026315789473684) internal successors, (115), 38 states have internal predecessors, (115), 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) [2024-10-13 22:30:37,767 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 204 transitions. [2024-10-13 22:30:37,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-13 22:30:37,767 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:30:37,767 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:30:37,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 22:30:37,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 22:30:37,968 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:30:37,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:30:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash -459906209, now seen corresponding path program 12 times [2024-10-13 22:30:37,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:30:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718972507] [2024-10-13 22:30:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:30:37,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:30:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:30:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 18 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:42,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:30:42,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718972507] [2024-10-13 22:30:42,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718972507] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:30:42,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016151689] [2024-10-13 22:30:42,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:30:42,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:42,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:30:42,175 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:30:42,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 22:30:42,525 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-10-13 22:30:42,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:30:42,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-10-13 22:30:42,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:30:42,554 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 1 [2024-10-13 22:30:42,639 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 23 treesize of output 11 [2024-10-13 22:30:42,726 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 0 case distinctions, treesize of input 30 treesize of output 21 [2024-10-13 22:30:42,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-10-13 22:30:42,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:30:42,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-10-13 22:30:43,049 INFO L349 Elim1Store]: treesize reduction 90, result has 38.4 percent of original size [2024-10-13 22:30:43,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 71 [2024-10-13 22:30:43,273 INFO L349 Elim1Store]: treesize reduction 130, result has 30.1 percent of original size [2024-10-13 22:30:43,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 89 [2024-10-13 22:30:43,630 INFO L349 Elim1Store]: treesize reduction 170, result has 24.8 percent of original size [2024-10-13 22:30:43,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 84 treesize of output 106 [2024-10-13 22:30:44,202 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 [2024-10-13 22:30:44,525 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 23 treesize of output 3 [2024-10-13 22:30:44,862 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 44 treesize of output 21 [2024-10-13 22:30:45,192 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 50 treesize of output 27 [2024-10-13 22:30:45,708 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 55 treesize of output 32 [2024-10-13 22:30:46,119 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 60 treesize of output 37 [2024-10-13 22:30:46,457 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 67 treesize of output 44 [2024-10-13 22:30:46,854 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 76 treesize of output 53 [2024-10-13 22:30:47,338 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 81 treesize of output 58 [2024-10-13 22:30:47,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:30:47,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:30:47,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 49 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 122 treesize of output 100 [2024-10-13 22:30:47,747 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 15 treesize of output 7 [2024-10-13 22:30:47,820 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:47,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:30:51,765 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 233 treesize of output 223 [2024-10-13 22:31:01,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:31:01,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 17569219981925674 treesize of output 16865532540149034