./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-cav19/array_tiling_tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:17:13,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:17:13,725 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:17:13,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:17:13,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:17:13,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:17:13,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:17:13,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:17:13,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:17:13,752 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:17:13,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:17:13,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:17:13,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:17:13,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:17:13,755 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:17:13,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:17:13,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:17:13,756 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:17:13,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:17:13,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:17:13,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:17:13,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:17:13,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:17:13,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:17:13,761 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:17:13,761 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:17:13,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:17:13,762 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:17:13,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:17:13,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:17:13,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:17:13,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:17:13,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:17:13,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:17:13,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:17:13,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:17:13,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:17:13,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:17:13,766 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:17:13,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:17:13,767 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:17:13,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:17:13,768 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e [2024-10-10 22:17:14,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:17:14,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:17:14,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:17:14,071 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:17:14,072 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:17:14,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2024-10-10 22:17:15,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:17:15,806 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:17:15,807 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2024-10-10 22:17:15,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cb149a46a/b11d2c8f7e8c4d4ba48a2c6bc662605b/FLAG89ffbe2d9 [2024-10-10 22:17:15,833 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cb149a46a/b11d2c8f7e8c4d4ba48a2c6bc662605b [2024-10-10 22:17:15,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:17:15,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:17:15,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:17:15,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:17:15,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:17:15,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:17:15" (1/1) ... [2024-10-10 22:17:15,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51413d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:15, skipping insertion in model container [2024-10-10 22:17:15,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:17:15" (1/1) ... [2024-10-10 22:17:15,867 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:17:16,047 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-cav19/array_tiling_tcpy.c[408,421] [2024-10-10 22:17:16,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:17:16,126 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:17:16,180 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-cav19/array_tiling_tcpy.c[408,421] [2024-10-10 22:17:16,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:17:16,210 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:17:16,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16 WrapperNode [2024-10-10 22:17:16,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:17:16,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:17:16,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:17:16,212 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:17:16,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (1/1) ... [2024-10-10 22:17:16,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (1/1) ... [2024-10-10 22:17:16,245 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-10-10 22:17:16,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:17:16,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:17:16,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:17:16,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:17:16,256 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (1/1) ... [2024-10-10 22:17:16,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (1/1) ... [2024-10-10 22:17:16,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (1/1) ... [2024-10-10 22:17:16,271 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 3, 3]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-10-10 22:17:16,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (1/1) ... [2024-10-10 22:17:16,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (1/1) ... [2024-10-10 22:17:16,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (1/1) ... [2024-10-10 22:17:16,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (1/1) ... [2024-10-10 22:17:16,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (1/1) ... [2024-10-10 22:17:16,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (1/1) ... [2024-10-10 22:17:16,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:17:16,289 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:17:16,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:17:16,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:17:16,290 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (1/1) ... [2024-10-10 22:17:16,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:17:16,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:16,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:17:16,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:17:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:17:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-10 22:17:16,367 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-10 22:17:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:17:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:17:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-10 22:17:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:17:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:17:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:17:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-10 22:17:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:17:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:17:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:17:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:17:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-10 22:17:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:17:16,434 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:17:16,435 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:17:16,557 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-10 22:17:16,558 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:17:16,582 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:17:16,583 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-10 22:17:16,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:17:16 BoogieIcfgContainer [2024-10-10 22:17:16,583 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:17:16,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:17:16,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:17:16,589 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:17:16,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:17:15" (1/3) ... [2024-10-10 22:17:16,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddd9326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:17:16, skipping insertion in model container [2024-10-10 22:17:16,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:17:16" (2/3) ... [2024-10-10 22:17:16,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddd9326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:17:16, skipping insertion in model container [2024-10-10 22:17:16,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:17:16" (3/3) ... [2024-10-10 22:17:16,593 INFO L112 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2024-10-10 22:17:16,607 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:17:16,607 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:17:16,658 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:17:16,664 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;@11a800f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:17:16,664 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:17:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:16,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-10 22:17:16,675 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:16,676 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:16,676 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:16,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:16,682 INFO L85 PathProgramCache]: Analyzing trace with hash 465532944, now seen corresponding path program 1 times [2024-10-10 22:17:16,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:16,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672520881] [2024-10-10 22:17:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:16,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:16,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:16,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:16,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:16,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672520881] [2024-10-10 22:17:16,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672520881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:17:16,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:17:16,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:17:16,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242297397] [2024-10-10 22:17:16,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:17:16,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:17:16,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:16,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:17:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:17:16,955 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:16,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:16,997 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions. [2024-10-10 22:17:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:17:17,004 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-10-10 22:17:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:17,011 INFO L225 Difference]: With dead ends: 32 [2024-10-10 22:17:17,012 INFO L226 Difference]: Without dead ends: 15 [2024-10-10 22:17:17,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:17:17,021 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:17,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:17:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-10 22:17:17,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-10 22:17:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-10-10 22:17:17,057 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 17 [2024-10-10 22:17:17,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:17,058 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-10-10 22:17:17,058 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:17,058 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-10-10 22:17:17,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-10 22:17:17,061 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:17,061 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:17,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:17:17,062 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:17,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:17,063 INFO L85 PathProgramCache]: Analyzing trace with hash 134474064, now seen corresponding path program 1 times [2024-10-10 22:17:17,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:17,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836889625] [2024-10-10 22:17:17,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:17,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:17,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:17,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:17,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:17,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836889625] [2024-10-10 22:17:17,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836889625] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:17:17,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:17:17,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-10 22:17:17,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974218326] [2024-10-10 22:17:17,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:17:17,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:17:17,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:17,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:17:17,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:17:17,323 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:17,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:17,362 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2024-10-10 22:17:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:17:17,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-10-10 22:17:17,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:17,364 INFO L225 Difference]: With dead ends: 28 [2024-10-10 22:17:17,364 INFO L226 Difference]: Without dead ends: 21 [2024-10-10 22:17:17,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:17:17,366 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:17,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 33 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:17:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-10 22:17:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2024-10-10 22:17:17,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-10-10 22:17:17,378 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 17 [2024-10-10 22:17:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:17,380 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-10-10 22:17:17,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-10-10 22:17:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-10 22:17:17,381 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:17,381 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:17,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:17:17,382 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:17,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:17,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1125781931, now seen corresponding path program 1 times [2024-10-10 22:17:17,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:17,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368582552] [2024-10-10 22:17:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:17,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:17,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:17,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:17,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368582552] [2024-10-10 22:17:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368582552] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362171373] [2024-10-10 22:17:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:17,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:17,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:17,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:17,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:17:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:17,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:17:17,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:17:18,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:17:18,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362171373] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:18,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:18,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-10-10 22:17:18,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432987020] [2024-10-10 22:17:18,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:18,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-10 22:17:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:18,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-10 22:17:18,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-10 22:17:18,188 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:17:18,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:18,410 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-10-10 22:17:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-10 22:17:18,411 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 18 [2024-10-10 22:17:18,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:18,412 INFO L225 Difference]: With dead ends: 31 [2024-10-10 22:17:18,412 INFO L226 Difference]: Without dead ends: 25 [2024-10-10 22:17:18,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:17:18,414 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 32 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:18,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 59 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:17:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-10 22:17:18,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2024-10-10 22:17:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-10-10 22:17:18,420 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 18 [2024-10-10 22:17:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:18,421 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-10-10 22:17:18,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:17:18,421 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-10-10 22:17:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-10 22:17:18,422 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:18,422 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:18,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 22:17:18,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:18,627 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:18,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:18,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1346228729, now seen corresponding path program 1 times [2024-10-10 22:17:18,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:18,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305787737] [2024-10-10 22:17:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:18,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:19,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:19,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:19,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:19,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305787737] [2024-10-10 22:17:19,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305787737] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:19,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481820037] [2024-10-10 22:17:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:19,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:19,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:19,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:17:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:19,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-10 22:17:19,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:19,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-10-10 22:17:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:17:19,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:19,801 INFO L349 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size [2024-10-10 22:17:19,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 38 [2024-10-10 22:17:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:19,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481820037] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:19,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:19,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 22 [2024-10-10 22:17:19,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622509290] [2024-10-10 22:17:19,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:19,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-10 22:17:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:19,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-10 22:17:19,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2024-10-10 22:17:19,910 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 21 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:17:20,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:20,176 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-10-10 22:17:20,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-10 22:17:20,177 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 21 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2024-10-10 22:17:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:20,178 INFO L225 Difference]: With dead ends: 25 [2024-10-10 22:17:20,178 INFO L226 Difference]: Without dead ends: 23 [2024-10-10 22:17:20,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2024-10-10 22:17:20,179 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 26 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:20,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 83 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:17:20,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-10 22:17:20,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-10-10 22:17:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:20,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-10-10 22:17:20,193 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 22 [2024-10-10 22:17:20,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:20,193 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-10-10 22:17:20,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 21 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:17:20,194 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-10-10 22:17:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-10 22:17:20,196 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:20,196 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:20,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 22:17:20,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:20,397 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:20,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:20,397 INFO L85 PathProgramCache]: Analyzing trace with hash 909762896, now seen corresponding path program 2 times [2024-10-10 22:17:20,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:20,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850394948] [2024-10-10 22:17:20,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:20,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:20,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:20,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:20,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:20,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:20,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850394948] [2024-10-10 22:17:20,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850394948] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:20,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511676336] [2024-10-10 22:17:20,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:17:20,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:20,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:20,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:20,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 22:17:20,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:17:20,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:17:20,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-10 22:17:20,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:20,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-10-10 22:17:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:21,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:21,352 INFO L349 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2024-10-10 22:17:21,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2024-10-10 22:17:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:21,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511676336] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:21,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:21,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-10-10 22:17:21,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003070216] [2024-10-10 22:17:21,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:21,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-10 22:17:21,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:21,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-10 22:17:21,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-10-10 22:17:21,409 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:21,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:21,907 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2024-10-10 22:17:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-10 22:17:21,908 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2024-10-10 22:17:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:21,909 INFO L225 Difference]: With dead ends: 57 [2024-10-10 22:17:21,910 INFO L226 Difference]: Without dead ends: 55 [2024-10-10 22:17:21,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190 [2024-10-10 22:17:21,912 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 54 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:21,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 160 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:17:21,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-10 22:17:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 28. [2024-10-10 22:17:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-10-10 22:17:21,926 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 25 [2024-10-10 22:17:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:21,928 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-10-10 22:17:21,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:21,928 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-10-10 22:17:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-10 22:17:21,930 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:21,930 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:21,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 22:17:22,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:22,131 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:22,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:22,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1905423184, now seen corresponding path program 3 times [2024-10-10 22:17:22,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:22,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97774696] [2024-10-10 22:17:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:22,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:22,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:22,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:22,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:22,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97774696] [2024-10-10 22:17:22,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97774696] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431027433] [2024-10-10 22:17:22,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:17:22,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:22,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:22,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:22,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 22:17:22,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-10 22:17:22,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:17:22,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-10 22:17:22,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:22,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-10-10 22:17:22,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:22,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:22,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:22,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:22,916 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:17:22,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 77 [2024-10-10 22:17:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:17:23,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:23,712 INFO L349 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2024-10-10 22:17:23,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 91 treesize of output 66 [2024-10-10 22:17:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:23,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431027433] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:23,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:23,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 11] total 31 [2024-10-10 22:17:23,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46352156] [2024-10-10 22:17:23,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:23,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-10 22:17:23,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:23,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-10 22:17:23,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2024-10-10 22:17:23,967 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 30 states have internal predecessors, (52), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:17:25,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:25,105 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2024-10-10 22:17:25,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-10 22:17:25,106 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 30 states have internal predecessors, (52), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-10-10 22:17:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:25,107 INFO L225 Difference]: With dead ends: 60 [2024-10-10 22:17:25,107 INFO L226 Difference]: Without dead ends: 58 [2024-10-10 22:17:25,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=304, Invalid=1676, Unknown=0, NotChecked=0, Total=1980 [2024-10-10 22:17:25,109 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 55 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:25,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 280 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 540 Invalid, 1 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:17:25,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-10 22:17:25,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 25. [2024-10-10 22:17:25,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-10-10 22:17:25,117 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 27 [2024-10-10 22:17:25,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:25,117 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-10-10 22:17:25,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 30 states have internal predecessors, (52), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:17:25,118 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-10-10 22:17:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-10 22:17:25,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:25,118 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:25,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 22:17:25,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-10 22:17:25,319 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:25,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:25,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1508015463, now seen corresponding path program 4 times [2024-10-10 22:17:25,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:25,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578085263] [2024-10-10 22:17:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:25,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:25,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:25,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:25,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:25,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578085263] [2024-10-10 22:17:25,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578085263] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:25,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594055984] [2024-10-10 22:17:25,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:17:25,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:25,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:25,801 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:25,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 22:17:25,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:17:25,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:17:25,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-10 22:17:25,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:25,900 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 31 treesize of output 32 [2024-10-10 22:17:25,957 INFO L349 Elim1Store]: treesize reduction 49, result has 29.0 percent of original size [2024-10-10 22:17:25,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 71 [2024-10-10 22:17:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:26,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:26,680 INFO L349 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2024-10-10 22:17:26,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 53 [2024-10-10 22:17:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594055984] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:26,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:26,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2024-10-10 22:17:26,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932801672] [2024-10-10 22:17:26,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:26,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-10 22:17:26,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:26,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-10 22:17:26,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2024-10-10 22:17:26,719 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:27,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:27,596 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2024-10-10 22:17:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-10 22:17:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-10-10 22:17:27,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:27,598 INFO L225 Difference]: With dead ends: 63 [2024-10-10 22:17:27,601 INFO L226 Difference]: Without dead ends: 47 [2024-10-10 22:17:27,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=507, Invalid=2043, Unknown=0, NotChecked=0, Total=2550 [2024-10-10 22:17:27,602 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:27,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 157 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:17:27,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-10 22:17:27,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2024-10-10 22:17:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-10-10 22:17:27,618 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 28 [2024-10-10 22:17:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:27,619 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-10-10 22:17:27,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-10-10 22:17:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-10 22:17:27,619 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:27,620 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:27,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 22:17:27,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:27,820 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:27,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:27,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1381876491, now seen corresponding path program 5 times [2024-10-10 22:17:27,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:27,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091017253] [2024-10-10 22:17:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:27,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:28,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:28,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091017253] [2024-10-10 22:17:28,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091017253] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84886587] [2024-10-10 22:17:28,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:17:28,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:28,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:28,460 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:28,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 22:17:28,543 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-10 22:17:28,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:17:28,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-10 22:17:28,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:28,576 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 36 treesize of output 37 [2024-10-10 22:17:28,632 INFO L349 Elim1Store]: treesize reduction 54, result has 28.9 percent of original size [2024-10-10 22:17:28,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 79 [2024-10-10 22:17:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:29,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:29,373 INFO L349 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2024-10-10 22:17:29,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 53 [2024-10-10 22:17:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:29,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84886587] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:29,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:29,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2024-10-10 22:17:29,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549601210] [2024-10-10 22:17:29,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:29,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-10 22:17:29,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:29,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-10 22:17:29,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2024-10-10 22:17:29,442 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 34 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 34 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:30,567 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2024-10-10 22:17:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-10 22:17:30,571 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 34 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-10-10 22:17:30,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:30,572 INFO L225 Difference]: With dead ends: 94 [2024-10-10 22:17:30,572 INFO L226 Difference]: Without dead ends: 92 [2024-10-10 22:17:30,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=579, Invalid=3081, Unknown=0, NotChecked=0, Total=3660 [2024-10-10 22:17:30,574 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 108 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:30,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 249 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:17:30,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-10 22:17:30,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 49. [2024-10-10 22:17:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-10-10 22:17:30,594 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 32 [2024-10-10 22:17:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:30,594 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-10-10 22:17:30,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 34 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-10-10 22:17:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-10 22:17:30,595 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:30,596 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:30,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-10 22:17:30,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-10 22:17:30,797 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:30,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1092155737, now seen corresponding path program 6 times [2024-10-10 22:17:30,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:30,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028688187] [2024-10-10 22:17:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:30,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:31,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:31,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:31,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:31,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028688187] [2024-10-10 22:17:31,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028688187] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:31,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567985013] [2024-10-10 22:17:31,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 22:17:31,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:31,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:31,453 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:31,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 22:17:31,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-10 22:17:31,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:17:31,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-10 22:17:31,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:31,581 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 30 treesize of output 31 [2024-10-10 22:17:31,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,641 INFO L349 Elim1Store]: treesize reduction 106, result has 15.2 percent of original size [2024-10-10 22:17:31,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 77 [2024-10-10 22:17:31,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:31,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:17:31,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 123 [2024-10-10 22:17:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:32,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:32,820 INFO L349 Elim1Store]: treesize reduction 156, result has 16.6 percent of original size [2024-10-10 22:17:32,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 129 treesize of output 94 [2024-10-10 22:17:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:32,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567985013] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:32,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:32,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 33 [2024-10-10 22:17:32,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270432112] [2024-10-10 22:17:32,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:32,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-10 22:17:32,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-10 22:17:32,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2024-10-10 22:17:32,970 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:33,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:33,682 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2024-10-10 22:17:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-10 22:17:33,683 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-10-10 22:17:33,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:33,684 INFO L225 Difference]: With dead ends: 97 [2024-10-10 22:17:33,684 INFO L226 Difference]: Without dead ends: 95 [2024-10-10 22:17:33,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=236, Invalid=1170, Unknown=0, NotChecked=0, Total=1406 [2024-10-10 22:17:33,685 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 42 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:33,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 463 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:17:33,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-10 22:17:33,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 37. [2024-10-10 22:17:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-10-10 22:17:33,704 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 32 [2024-10-10 22:17:33,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:33,704 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-10-10 22:17:33,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:33,704 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-10-10 22:17:33,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-10 22:17:33,705 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:33,705 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:33,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 22:17:33,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:33,906 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:33,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:33,906 INFO L85 PathProgramCache]: Analyzing trace with hash 226229708, now seen corresponding path program 7 times [2024-10-10 22:17:33,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:33,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699611617] [2024-10-10 22:17:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:33,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:34,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:34,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:34,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:34,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699611617] [2024-10-10 22:17:34,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699611617] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:34,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178618272] [2024-10-10 22:17:34,631 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 22:17:34,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:34,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:34,633 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:34,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 22:17:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:34,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-10 22:17:34,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:34,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-10-10 22:17:34,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:34,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:34,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:17:34,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67 [2024-10-10 22:17:34,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:34,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:34,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:34,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:34,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:17:34,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 103 [2024-10-10 22:17:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:17:35,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:35,956 INFO L349 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2024-10-10 22:17:35,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 133 treesize of output 96 [2024-10-10 22:17:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:36,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178618272] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:36,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:36,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 40 [2024-10-10 22:17:36,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231679919] [2024-10-10 22:17:36,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:36,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-10 22:17:36,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:36,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-10 22:17:36,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1328, Unknown=0, NotChecked=0, Total=1560 [2024-10-10 22:17:36,022 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 40 states, 40 states have (on average 1.9) internal successors, (76), 39 states have internal predecessors, (76), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:17:37,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:37,174 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2024-10-10 22:17:37,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-10 22:17:37,175 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.9) internal successors, (76), 39 states have internal predecessors, (76), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2024-10-10 22:17:37,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:37,175 INFO L225 Difference]: With dead ends: 97 [2024-10-10 22:17:37,175 INFO L226 Difference]: Without dead ends: 75 [2024-10-10 22:17:37,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=812, Invalid=3610, Unknown=0, NotChecked=0, Total=4422 [2024-10-10 22:17:37,177 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 89 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:37,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 178 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:17:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-10 22:17:37,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2024-10-10 22:17:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 52 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2024-10-10 22:17:37,210 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 35 [2024-10-10 22:17:37,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:37,211 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2024-10-10 22:17:37,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.9) internal successors, (76), 39 states have internal predecessors, (76), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:17:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2024-10-10 22:17:37,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-10 22:17:37,212 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:37,212 INFO L215 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:37,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 22:17:37,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-10 22:17:37,417 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:37,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash 595307595, now seen corresponding path program 8 times [2024-10-10 22:17:37,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:37,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853075404] [2024-10-10 22:17:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:37,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:38,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:38,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:38,063 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:38,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:38,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853075404] [2024-10-10 22:17:38,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853075404] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:38,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993915021] [2024-10-10 22:17:38,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:17:38,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:38,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:38,066 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:38,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 22:17:38,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:17:38,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:17:38,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-10 22:17:38,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:38,194 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 30 treesize of output 31 [2024-10-10 22:17:38,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,267 INFO L349 Elim1Store]: treesize reduction 106, result has 15.2 percent of original size [2024-10-10 22:17:38,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 77 [2024-10-10 22:17:38,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:38,368 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:17:38,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 123 [2024-10-10 22:17:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:39,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:39,568 INFO L349 Elim1Store]: treesize reduction 156, result has 16.6 percent of original size [2024-10-10 22:17:39,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 129 treesize of output 94 [2024-10-10 22:17:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:39,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993915021] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:39,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:39,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 38 [2024-10-10 22:17:39,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491078394] [2024-10-10 22:17:39,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:39,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-10 22:17:39,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:39,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-10 22:17:39,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2024-10-10 22:17:39,716 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 38 states, 38 states have (on average 1.868421052631579) internal successors, (71), 38 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:41,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:41,007 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2024-10-10 22:17:41,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-10 22:17:41,007 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.868421052631579) internal successors, (71), 38 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2024-10-10 22:17:41,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:41,008 INFO L225 Difference]: With dead ends: 104 [2024-10-10 22:17:41,009 INFO L226 Difference]: Without dead ends: 102 [2024-10-10 22:17:41,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=287, Invalid=1875, Unknown=0, NotChecked=0, Total=2162 [2024-10-10 22:17:41,010 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 76 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:41,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 519 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1004 Invalid, 1 Unknown, 0 Unchecked, 1.0s Time] [2024-10-10 22:17:41,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-10 22:17:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 41. [2024-10-10 22:17:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-10-10 22:17:41,032 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2024-10-10 22:17:41,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:41,032 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-10-10 22:17:41,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.868421052631579) internal successors, (71), 38 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-10-10 22:17:41,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-10 22:17:41,033 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:41,033 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:41,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-10 22:17:41,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:41,239 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:41,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:41,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1783665168, now seen corresponding path program 9 times [2024-10-10 22:17:41,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:41,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778318767] [2024-10-10 22:17:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:41,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:42,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:42,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:42,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:42,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778318767] [2024-10-10 22:17:42,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778318767] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:42,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216270392] [2024-10-10 22:17:42,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:17:42,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:42,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:42,058 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:42,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 22:17:42,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-10 22:17:42,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:17:42,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-10 22:17:42,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:42,248 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 30 treesize of output 31 [2024-10-10 22:17:42,310 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-10-10 22:17:42,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 67 [2024-10-10 22:17:42,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:42,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:42,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:42,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:42,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:17:42,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 103 [2024-10-10 22:17:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:43,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:43,476 INFO L349 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2024-10-10 22:17:43,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 75 [2024-10-10 22:17:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:43,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216270392] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:43,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:43,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2024-10-10 22:17:43,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229527689] [2024-10-10 22:17:43,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:43,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-10 22:17:43,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:43,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-10 22:17:43,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1393, Unknown=0, NotChecked=0, Total=1640 [2024-10-10 22:17:43,570 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 41 states, 41 states have (on average 2.024390243902439) internal successors, (83), 41 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:44,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:44,851 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2024-10-10 22:17:44,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-10 22:17:44,851 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.024390243902439) internal successors, (83), 41 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2024-10-10 22:17:44,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:44,852 INFO L225 Difference]: With dead ends: 115 [2024-10-10 22:17:44,852 INFO L226 Difference]: Without dead ends: 113 [2024-10-10 22:17:44,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=713, Invalid=3447, Unknown=0, NotChecked=0, Total=4160 [2024-10-10 22:17:44,854 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 123 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:44,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 264 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:17:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-10 22:17:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 64. [2024-10-10 22:17:44,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 60 states have (on average 1.15) internal successors, (69), 60 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:44,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2024-10-10 22:17:44,890 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 39 [2024-10-10 22:17:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:44,891 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2024-10-10 22:17:44,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.024390243902439) internal successors, (83), 41 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2024-10-10 22:17:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-10 22:17:44,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:44,891 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:44,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-10 22:17:45,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-10 22:17:45,092 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:45,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:45,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2070949543, now seen corresponding path program 10 times [2024-10-10 22:17:45,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:45,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714169381] [2024-10-10 22:17:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:45,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:45,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 1 proven. 75 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:45,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:45,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714169381] [2024-10-10 22:17:45,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714169381] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:45,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349042591] [2024-10-10 22:17:45,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:17:45,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:45,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:45,792 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:45,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-10 22:17:46,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:17:46,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:17:46,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-10 22:17:46,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:46,206 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 33 treesize of output 34 [2024-10-10 22:17:46,271 INFO L349 Elim1Store]: treesize reduction 136, result has 13.9 percent of original size [2024-10-10 22:17:46,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 83 [2024-10-10 22:17:46,416 INFO L349 Elim1Store]: treesize reduction 327, result has 12.8 percent of original size [2024-10-10 22:17:46,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 132 [2024-10-10 22:17:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 1 proven. 75 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:47,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:47,878 INFO L349 Elim1Store]: treesize reduction 156, result has 16.6 percent of original size [2024-10-10 22:17:47,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 129 treesize of output 94 [2024-10-10 22:17:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 3 proven. 73 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:48,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349042591] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:48,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:48,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2024-10-10 22:17:48,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105070844] [2024-10-10 22:17:48,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:48,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-10 22:17:48,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:48,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-10 22:17:48,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2114, Unknown=0, NotChecked=0, Total=2352 [2024-10-10 22:17:48,131 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand has 49 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 49 states have internal predecessors, (88), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:49,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:49,655 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2024-10-10 22:17:49,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-10 22:17:49,655 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 49 states have internal predecessors, (88), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2024-10-10 22:17:49,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:49,656 INFO L225 Difference]: With dead ends: 118 [2024-10-10 22:17:49,656 INFO L226 Difference]: Without dead ends: 116 [2024-10-10 22:17:49,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=426, Invalid=3480, Unknown=0, NotChecked=0, Total=3906 [2024-10-10 22:17:49,658 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 48 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:49,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 673 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:17:49,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-10 22:17:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 46. [2024-10-10 22:17:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2024-10-10 22:17:49,695 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 40 [2024-10-10 22:17:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:49,695 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2024-10-10 22:17:49,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 49 states have internal predecessors, (88), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:49,695 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2024-10-10 22:17:49,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-10 22:17:49,696 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:49,696 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:49,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-10 22:17:49,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-10 22:17:49,897 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:49,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:49,897 INFO L85 PathProgramCache]: Analyzing trace with hash 171584711, now seen corresponding path program 11 times [2024-10-10 22:17:49,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:49,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546816508] [2024-10-10 22:17:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:49,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:50,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:50,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:50,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:50,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546816508] [2024-10-10 22:17:50,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546816508] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:50,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786668328] [2024-10-10 22:17:50,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:17:50,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:50,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:50,678 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:50,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-10 22:17:50,817 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-10-10 22:17:50,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:17:50,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-10 22:17:50,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:50,832 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 30 treesize of output 31 [2024-10-10 22:17:50,880 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-10-10 22:17:50,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 67 [2024-10-10 22:17:50,968 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-10-10 22:17:50,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 91 treesize of output 103 [2024-10-10 22:17:51,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:51,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:51,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:51,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:51,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:51,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:51,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:51,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:51,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:17:51,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 121 treesize of output 139 [2024-10-10 22:17:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:52,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:52,744 INFO L349 Elim1Store]: treesize reduction 40, result has 38.5 percent of original size [2024-10-10 22:17:52,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 149 treesize of output 97 [2024-10-10 22:17:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:52,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786668328] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:52,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:52,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 47 [2024-10-10 22:17:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340803962] [2024-10-10 22:17:52,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:52,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-10 22:17:52,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:52,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-10 22:17:52,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1851, Unknown=0, NotChecked=0, Total=2162 [2024-10-10 22:17:52,802 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 47 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:54,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:54,417 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-10-10 22:17:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-10 22:17:54,417 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 47 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2024-10-10 22:17:54,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:54,418 INFO L225 Difference]: With dead ends: 104 [2024-10-10 22:17:54,418 INFO L226 Difference]: Without dead ends: 102 [2024-10-10 22:17:54,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=861, Invalid=4251, Unknown=0, NotChecked=0, Total=5112 [2024-10-10 22:17:54,420 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 109 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:54,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 263 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:17:54,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-10 22:17:54,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 49. [2024-10-10 22:17:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:54,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-10-10 22:17:54,461 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 42 [2024-10-10 22:17:54,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:54,462 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-10-10 22:17:54,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 47 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:54,462 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-10-10 22:17:54,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-10 22:17:54,462 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:54,462 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:54,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-10 22:17:54,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-10 22:17:54,663 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:54,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:54,663 INFO L85 PathProgramCache]: Analyzing trace with hash 674261648, now seen corresponding path program 12 times [2024-10-10 22:17:54,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:54,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176933725] [2024-10-10 22:17:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:54,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:54,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:54,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 78 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:54,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:54,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176933725] [2024-10-10 22:17:54,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176933725] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:54,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573713459] [2024-10-10 22:17:54,886 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 22:17:54,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:54,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:54,888 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:54,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-10 22:17:55,087 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-10-10 22:17:55,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:17:55,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-10 22:17:55,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 100 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:55,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 100 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:55,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573713459] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:17:55,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:17:55,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2024-10-10 22:17:55,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101157091] [2024-10-10 22:17:55,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:17:55,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-10 22:17:55,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:17:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-10 22:17:55,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2024-10-10 22:17:55,390 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:55,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:17:55,563 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2024-10-10 22:17:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-10 22:17:55,563 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2024-10-10 22:17:55,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:17:55,564 INFO L225 Difference]: With dead ends: 95 [2024-10-10 22:17:55,564 INFO L226 Difference]: Without dead ends: 64 [2024-10-10 22:17:55,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 70 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2024-10-10 22:17:55,565 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:17:55,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 152 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:17:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-10 22:17:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2024-10-10 22:17:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:17:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-10-10 22:17:55,595 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 45 [2024-10-10 22:17:55,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:17:55,596 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-10-10 22:17:55,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:17:55,596 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-10-10 22:17:55,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-10 22:17:55,596 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:17:55,596 INFO L215 NwaCegarLoop]: trace histogram [10, 7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:17:55,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-10 22:17:55,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:55,797 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:17:55,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:17:55,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1689792528, now seen corresponding path program 13 times [2024-10-10 22:17:55,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:17:55,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713079241] [2024-10-10 22:17:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:17:55,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:17:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:56,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:17:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:56,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:17:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 2 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:17:56,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:17:56,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713079241] [2024-10-10 22:17:56,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713079241] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:17:56,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031119088] [2024-10-10 22:17:56,713 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 22:17:56,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:17:56,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:17:56,718 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:17:56,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-10 22:17:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:17:56,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-10 22:17:56,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:17:57,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-10-10 22:17:57,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,144 INFO L349 Elim1Store]: treesize reduction 69, result has 21.6 percent of original size [2024-10-10 22:17:57,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 77 [2024-10-10 22:17:57,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,285 INFO L349 Elim1Store]: treesize reduction 171, result has 19.7 percent of original size [2024-10-10 22:17:57,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 111 treesize of output 123 [2024-10-10 22:17:57,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:17:57,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:17:57,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 169 [2024-10-10 22:17:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 112 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:17:58,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:17:59,604 INFO L349 Elim1Store]: treesize reduction 292, result has 12.3 percent of original size [2024-10-10 22:17:59,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 167 treesize of output 122 [2024-10-10 22:18:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:00,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031119088] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:00,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:00,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 21] total 61 [2024-10-10 22:18:00,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209047798] [2024-10-10 22:18:00,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:00,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-10-10 22:18:00,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:00,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-10-10 22:18:00,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3355, Unknown=0, NotChecked=0, Total=3660 [2024-10-10 22:18:00,613 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 61 states, 61 states have (on average 1.7377049180327868) internal successors, (106), 60 states have internal predecessors, (106), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:18:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:08,167 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2024-10-10 22:18:08,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-10 22:18:08,168 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.7377049180327868) internal successors, (106), 60 states have internal predecessors, (106), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2024-10-10 22:18:08,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:08,168 INFO L225 Difference]: With dead ends: 112 [2024-10-10 22:18:08,168 INFO L226 Difference]: Without dead ends: 110 [2024-10-10 22:18:08,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=738, Invalid=7451, Unknown=1, NotChecked=0, Total=8190 [2024-10-10 22:18:08,170 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 150 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:08,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 966 Invalid, 2202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-10 22:18:08,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-10-10 22:18:08,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 49. [2024-10-10 22:18:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:18:08,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-10-10 22:18:08,205 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 45 [2024-10-10 22:18:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:08,205 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-10-10 22:18:08,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.7377049180327868) internal successors, (106), 60 states have internal predecessors, (106), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:18:08,205 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-10-10 22:18:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-10 22:18:08,206 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:08,206 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:08,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-10 22:18:08,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-10 22:18:08,407 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:08,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1319056277, now seen corresponding path program 14 times [2024-10-10 22:18:08,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:08,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983389780] [2024-10-10 22:18:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:08,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:09,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:18:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:09,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:18:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:09,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983389780] [2024-10-10 22:18:09,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983389780] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765890269] [2024-10-10 22:18:09,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:18:09,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:09,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:09,376 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:09,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-10 22:18:09,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:18:09,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:09,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-10 22:18:09,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:09,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-10-10 22:18:09,664 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-10-10 22:18:09,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 67 [2024-10-10 22:18:09,747 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-10-10 22:18:09,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 91 treesize of output 103 [2024-10-10 22:18:09,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:09,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:09,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:09,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:09,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:09,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:09,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:09,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:09,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:18:09,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 121 treesize of output 139 [2024-10-10 22:18:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:18:11,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:11,644 INFO L349 Elim1Store]: treesize reduction 156, result has 15.7 percent of original size [2024-10-10 22:18:11,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 153 treesize of output 103 [2024-10-10 22:18:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:11,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765890269] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:11,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:11,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 19] total 55 [2024-10-10 22:18:11,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088247137] [2024-10-10 22:18:11,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:11,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-10 22:18:11,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:11,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-10 22:18:11,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2615, Unknown=0, NotChecked=0, Total=2970 [2024-10-10 22:18:11,790 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 54 states have internal predecessors, (109), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:18:14,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:14,394 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2024-10-10 22:18:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-10 22:18:14,395 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 54 states have internal predecessors, (109), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2024-10-10 22:18:14,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:14,396 INFO L225 Difference]: With dead ends: 141 [2024-10-10 22:18:14,396 INFO L226 Difference]: Without dead ends: 139 [2024-10-10 22:18:14,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2022 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1265, Invalid=7477, Unknown=0, NotChecked=0, Total=8742 [2024-10-10 22:18:14,398 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 174 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:14,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 297 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:18:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-10 22:18:14,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 78. [2024-10-10 22:18:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.135135135135135) internal successors, (84), 74 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:18:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2024-10-10 22:18:14,469 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 46 [2024-10-10 22:18:14,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:14,469 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2024-10-10 22:18:14,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 54 states have internal predecessors, (109), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:18:14,470 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2024-10-10 22:18:14,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-10 22:18:14,470 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:14,470 INFO L215 NwaCegarLoop]: trace histogram [10, 8, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:14,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-10 22:18:14,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-10 22:18:14,671 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:14,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:14,671 INFO L85 PathProgramCache]: Analyzing trace with hash -697256281, now seen corresponding path program 15 times [2024-10-10 22:18:14,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:14,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103356719] [2024-10-10 22:18:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:14,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:15,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:18:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:15,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:18:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 1 proven. 131 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:15,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:15,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103356719] [2024-10-10 22:18:15,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103356719] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:15,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709797921] [2024-10-10 22:18:15,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:18:15,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:15,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:15,612 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:15,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-10 22:18:16,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-10-10 22:18:16,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:16,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-10 22:18:16,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:16,876 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 33 treesize of output 34 [2024-10-10 22:18:16,948 INFO L349 Elim1Store]: treesize reduction 136, result has 13.9 percent of original size [2024-10-10 22:18:16,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 83 [2024-10-10 22:18:17,072 INFO L349 Elim1Store]: treesize reduction 327, result has 12.8 percent of original size [2024-10-10 22:18:17,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 132 [2024-10-10 22:18:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 1 proven. 131 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:18,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:19,162 INFO L349 Elim1Store]: treesize reduction 156, result has 16.6 percent of original size [2024-10-10 22:18:19,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 129 treesize of output 94 [2024-10-10 22:18:19,887 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 3 proven. 129 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:19,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709797921] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:19,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:19,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 61 [2024-10-10 22:18:19,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590930550] [2024-10-10 22:18:19,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:19,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-10-10 22:18:19,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:19,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-10-10 22:18:19,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3430, Unknown=0, NotChecked=0, Total=3660 [2024-10-10 22:18:19,889 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 61 states, 61 states have (on average 1.8360655737704918) internal successors, (112), 61 states have internal predecessors, (112), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:18:24,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:24,211 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2024-10-10 22:18:24,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-10 22:18:24,211 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.8360655737704918) internal successors, (112), 61 states have internal predecessors, (112), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2024-10-10 22:18:24,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:24,212 INFO L225 Difference]: With dead ends: 144 [2024-10-10 22:18:24,212 INFO L226 Difference]: Without dead ends: 142 [2024-10-10 22:18:24,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=617, Invalid=7755, Unknown=0, NotChecked=0, Total=8372 [2024-10-10 22:18:24,213 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 131 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:24,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1193 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2480 Invalid, 2 Unknown, 0 Unchecked, 2.5s Time] [2024-10-10 22:18:24,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-10-10 22:18:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 54. [2024-10-10 22:18:24,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:18:24,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-10-10 22:18:24,262 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 48 [2024-10-10 22:18:24,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:24,262 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-10-10 22:18:24,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.8360655737704918) internal successors, (112), 61 states have internal predecessors, (112), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:18:24,262 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-10-10 22:18:24,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-10 22:18:24,262 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:24,263 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:24,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-10 22:18:24,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-10 22:18:24,463 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:24,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1344538516, now seen corresponding path program 16 times [2024-10-10 22:18:24,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:24,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845798810] [2024-10-10 22:18:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:24,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:25,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:18:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:25,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:18:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:25,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:25,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845798810] [2024-10-10 22:18:25,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845798810] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:25,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786139432] [2024-10-10 22:18:25,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:18:25,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:25,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:25,426 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:25,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-10 22:18:25,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:18:25,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:25,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-10 22:18:25,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:25,759 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 32 treesize of output 33 [2024-10-10 22:18:25,803 INFO L349 Elim1Store]: treesize reduction 52, result has 27.8 percent of original size [2024-10-10 22:18:25,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 75 [2024-10-10 22:18:25,866 INFO L349 Elim1Store]: treesize reduction 70, result has 23.9 percent of original size [2024-10-10 22:18:25,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 105 treesize of output 117 [2024-10-10 22:18:25,965 INFO L349 Elim1Store]: treesize reduction 138, result has 22.9 percent of original size [2024-10-10 22:18:25,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 141 treesize of output 159 [2024-10-10 22:18:26,079 INFO L349 Elim1Store]: treesize reduction 172, result has 20.0 percent of original size [2024-10-10 22:18:26,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 177 treesize of output 201 [2024-10-10 22:18:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:27,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:28,580 INFO L349 Elim1Store]: treesize reduction 50, result has 38.3 percent of original size [2024-10-10 22:18:28,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 183 treesize of output 119 [2024-10-10 22:18:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:28,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786139432] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:28,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:28,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 55 [2024-10-10 22:18:28,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198191175] [2024-10-10 22:18:28,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:28,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-10 22:18:28,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:28,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-10 22:18:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2662, Unknown=0, NotChecked=0, Total=2970 [2024-10-10 22:18:28,661 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 55 states have internal predecessors, (115), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:18:32,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:32,390 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2024-10-10 22:18:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-10-10 22:18:32,391 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 55 states have internal predecessors, (115), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2024-10-10 22:18:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:32,392 INFO L225 Difference]: With dead ends: 124 [2024-10-10 22:18:32,392 INFO L226 Difference]: Without dead ends: 122 [2024-10-10 22:18:32,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1887 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1353, Invalid=8747, Unknown=0, NotChecked=0, Total=10100 [2024-10-10 22:18:32,393 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 117 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:32,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 367 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 22:18:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-10 22:18:32,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 57. [2024-10-10 22:18:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:18:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-10-10 22:18:32,448 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 49 [2024-10-10 22:18:32,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:32,448 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-10-10 22:18:32,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 55 states have internal predecessors, (115), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:18:32,449 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-10-10 22:18:32,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-10 22:18:32,449 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:32,449 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:32,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-10 22:18:32,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:32,650 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:32,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash -276709173, now seen corresponding path program 17 times [2024-10-10 22:18:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815600831] [2024-10-10 22:18:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:32,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:32,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:18:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:32,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:18:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 127 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:32,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:32,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815600831] [2024-10-10 22:18:32,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815600831] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:32,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596915640] [2024-10-10 22:18:32,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:18:32,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:32,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:32,916 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:32,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-10 22:18:33,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-10 22:18:33,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:33,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-10 22:18:33,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 155 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:33,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 155 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:33,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596915640] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:33,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:33,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 33 [2024-10-10 22:18:33,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368057726] [2024-10-10 22:18:33,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:33,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-10 22:18:33,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:33,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-10 22:18:33,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2024-10-10 22:18:33,579 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:18:33,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:33,841 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2024-10-10 22:18:33,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-10 22:18:33,841 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2024-10-10 22:18:33,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:33,842 INFO L225 Difference]: With dead ends: 112 [2024-10-10 22:18:33,842 INFO L226 Difference]: Without dead ends: 75 [2024-10-10 22:18:33,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 79 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=351, Invalid=1055, Unknown=0, NotChecked=0, Total=1406 [2024-10-10 22:18:33,844 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:33,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 182 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:18:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-10 22:18:33,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 57. [2024-10-10 22:18:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.150943396226415) internal successors, (61), 53 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-10 22:18:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2024-10-10 22:18:33,901 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 52 [2024-10-10 22:18:33,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:33,902 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2024-10-10 22:18:33,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-10 22:18:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2024-10-10 22:18:33,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-10 22:18:33,902 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:33,902 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:33,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-10 22:18:34,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:34,103 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:34,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:34,103 INFO L85 PathProgramCache]: Analyzing trace with hash -537681264, now seen corresponding path program 18 times [2024-10-10 22:18:34,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:34,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848353484] [2024-10-10 22:18:34,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:34,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:35,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:18:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:35,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-10 22:18:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:18:35,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:35,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848353484] [2024-10-10 22:18:35,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848353484] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:35,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169781657] [2024-10-10 22:18:35,158 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 22:18:35,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:35,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:35,160 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:35,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-10 22:18:35,986 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-10-10 22:18:35,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:35,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-10 22:18:35,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:36,005 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 30 treesize of output 31 [2024-10-10 22:18:36,054 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-10-10 22:18:36,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 67 [2024-10-10 22:18:36,121 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-10-10 22:18:36,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 91 treesize of output 103 [2024-10-10 22:18:36,214 INFO L349 Elim1Store]: treesize reduction 128, result has 22.4 percent of original size [2024-10-10 22:18:36,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 121 treesize of output 139 [2024-10-10 22:18:36,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:36,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:36,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:36,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:36,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:36,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:36,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:36,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:36,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:36,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:36,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:36,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:18:36,313 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:18:36,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 45 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 151 treesize of output 175