./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 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 20:01:40,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 20:01:40,448 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 20:01:40,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 20:01:40,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 20:01:40,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 20:01:40,504 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 20:01:40,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 20:01:40,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 20:01:40,507 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 20:01:40,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 20:01:40,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 20:01:40,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 20:01:40,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 20:01:40,509 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 20:01:40,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 20:01:40,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 20:01:40,510 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 20:01:40,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 20:01:40,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 20:01:40,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 20:01:40,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 20:01:40,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 20:01:40,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 20:01:40,517 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 20:01:40,517 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 20:01:40,517 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 20:01:40,517 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 20:01:40,518 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 20:01:40,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 20:01:40,519 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 20:01:40,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 20:01:40,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:01:40,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 20:01:40,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 20:01:40,520 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 20:01:40,521 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 20:01:40,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 20:01:40,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 20:01:40,522 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 20:01:40,522 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 20:01:40,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 20:01:40,523 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e [2024-10-23 20:01:40,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 20:01:40,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 20:01:40,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 20:01:40,806 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 20:01:40,806 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 20:01:40,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2024-10-23 20:01:42,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 20:01:42,498 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 20:01:42,499 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2024-10-23 20:01:42,510 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b2f1daf5/5ca6e3b315174eaaaf23735caf5d2faa/FLAG288f22729 [2024-10-23 20:01:42,867 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b2f1daf5/5ca6e3b315174eaaaf23735caf5d2faa [2024-10-23 20:01:42,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 20:01:42,871 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 20:01:42,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 20:01:42,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 20:01:42,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 20:01:42,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:01:42" (1/1) ... [2024-10-23 20:01:42,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc2c6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:42, skipping insertion in model container [2024-10-23 20:01:42,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:01:42" (1/1) ... [2024-10-23 20:01:42,901 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 20:01:43,071 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] [2024-10-23 20:01:43,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:01:43,101 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 20:01:43,114 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] [2024-10-23 20:01:43,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:01:43,138 INFO L204 MainTranslator]: Completed translation [2024-10-23 20:01:43,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43 WrapperNode [2024-10-23 20:01:43,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 20:01:43,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 20:01:43,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 20:01:43,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 20:01:43,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (1/1) ... [2024-10-23 20:01:43,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (1/1) ... [2024-10-23 20:01:43,177 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-10-23 20:01:43,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 20:01:43,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 20:01:43,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 20:01:43,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 20:01:43,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (1/1) ... [2024-10-23 20:01:43,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (1/1) ... [2024-10-23 20:01:43,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (1/1) ... [2024-10-23 20:01:43,222 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]. [2024-10-23 20:01:43,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (1/1) ... [2024-10-23 20:01:43,222 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (1/1) ... [2024-10-23 20:01:43,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (1/1) ... [2024-10-23 20:01:43,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (1/1) ... [2024-10-23 20:01:43,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (1/1) ... [2024-10-23 20:01:43,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (1/1) ... [2024-10-23 20:01:43,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 20:01:43,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 20:01:43,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 20:01:43,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 20:01:43,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (1/1) ... [2024-10-23 20:01:43,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:01:43,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:01:43,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 20:01:43,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 20:01:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 20:01:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-23 20:01:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-23 20:01:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 20:01:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 20:01:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 20:01:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 20:01:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-23 20:01:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-23 20:01:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-23 20:01:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 20:01:43,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 20:01:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-23 20:01:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-23 20:01:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-23 20:01:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 20:01:43,400 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 20:01:43,401 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 20:01:43,520 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-23 20:01:43,520 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 20:01:43,557 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 20:01:43,557 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-23 20:01:43,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:01:43 BoogieIcfgContainer [2024-10-23 20:01:43,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 20:01:43,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 20:01:43,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 20:01:43,564 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 20:01:43,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:01:42" (1/3) ... [2024-10-23 20:01:43,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e40248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:01:43, skipping insertion in model container [2024-10-23 20:01:43,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:01:43" (2/3) ... [2024-10-23 20:01:43,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e40248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:01:43, skipping insertion in model container [2024-10-23 20:01:43,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:01:43" (3/3) ... [2024-10-23 20:01:43,568 INFO L112 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2024-10-23 20:01:43,587 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 20:01:43,587 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 20:01:43,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 20:01:43,675 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;@7d72c9e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 20:01:43,675 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 20:01:43,679 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) [2024-10-23 20:01:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-23 20:01:43,687 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:01:43,688 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:01:43,689 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:01:43,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:01:43,697 INFO L85 PathProgramCache]: Analyzing trace with hash 465532944, now seen corresponding path program 1 times [2024-10-23 20:01:43,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:01:43,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330991428] [2024-10-23 20:01:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:01:43,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:01:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:43,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:01:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:43,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:01:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:43,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:01:43,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330991428] [2024-10-23 20:01:43,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330991428] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:01:43,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:01:43,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:01:43,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268686672] [2024-10-23 20:01:43,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:01:43,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 20:01:43,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:01:43,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 20:01:43,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 20:01:43,959 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) [2024-10-23 20:01:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:01:43,996 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions. [2024-10-23 20:01:43,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 20:01:43,998 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 [2024-10-23 20:01:43,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:01:44,003 INFO L225 Difference]: With dead ends: 32 [2024-10-23 20:01:44,003 INFO L226 Difference]: Without dead ends: 15 [2024-10-23 20:01:44,006 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 [2024-10-23 20:01:44,009 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 [2024-10-23 20:01:44,011 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] [2024-10-23 20:01:44,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-23 20:01:44,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-23 20:01:44,040 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) [2024-10-23 20:01:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-10-23 20:01:44,042 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 17 [2024-10-23 20:01:44,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:01:44,042 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-10-23 20:01:44,043 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) [2024-10-23 20:01:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-10-23 20:01:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-23 20:01:44,044 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:01:44,044 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:01:44,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 20:01:44,045 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:01:44,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:01:44,046 INFO L85 PathProgramCache]: Analyzing trace with hash 134474064, now seen corresponding path program 1 times [2024-10-23 20:01:44,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:01:44,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529247561] [2024-10-23 20:01:44,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:01:44,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:01:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:44,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:01:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:44,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:01:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:44,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:01:44,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529247561] [2024-10-23 20:01:44,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529247561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:01:44,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:01:44,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-23 20:01:44,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526969474] [2024-10-23 20:01:44,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:01:44,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 20:01:44,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:01:44,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 20:01:44,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:01:44,284 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) [2024-10-23 20:01:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:01:44,352 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2024-10-23 20:01:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 20:01:44,353 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 [2024-10-23 20:01:44,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:01:44,354 INFO L225 Difference]: With dead ends: 28 [2024-10-23 20:01:44,354 INFO L226 Difference]: Without dead ends: 21 [2024-10-23 20:01:44,354 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 [2024-10-23 20:01:44,355 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, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 20:01:44,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 33 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 20:01:44,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-23 20:01:44,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2024-10-23 20:01:44,361 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) [2024-10-23 20:01:44,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-10-23 20:01:44,362 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 17 [2024-10-23 20:01:44,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:01:44,363 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-10-23 20:01:44,363 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) [2024-10-23 20:01:44,363 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-10-23 20:01:44,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-23 20:01:44,364 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:01:44,364 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:01:44,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 20:01:44,365 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:01:44,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:01:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1125781931, now seen corresponding path program 1 times [2024-10-23 20:01:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:01:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109975471] [2024-10-23 20:01:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:01:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:01:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:44,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:01:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:44,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:01:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:44,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:01:44,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109975471] [2024-10-23 20:01:44,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109975471] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:01:44,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205322819] [2024-10-23 20:01:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:01:44,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:01:44,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:01:44,924 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:01:44,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 20:01:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:45,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-23 20:01:45,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:01:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:01:45,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:01:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:01:45,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205322819] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:01:45,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:01:45,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-10-23 20:01:45,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261325474] [2024-10-23 20:01:45,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:01:45,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-23 20:01:45,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:01:45,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-23 20:01:45,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-23 20:01:45,252 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) [2024-10-23 20:01:45,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:01:45,461 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-10-23 20:01:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-23 20:01:45,462 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 [2024-10-23 20:01:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:01:45,463 INFO L225 Difference]: With dead ends: 31 [2024-10-23 20:01:45,463 INFO L226 Difference]: Without dead ends: 25 [2024-10-23 20:01:45,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-10-23 20:01:45,466 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 [2024-10-23 20:01:45,467 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] [2024-10-23 20:01:45,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-23 20:01:45,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2024-10-23 20:01:45,473 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) [2024-10-23 20:01:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-10-23 20:01:45,474 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 18 [2024-10-23 20:01:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:01:45,475 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-10-23 20:01:45,475 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) [2024-10-23 20:01:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-10-23 20:01:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-23 20:01:45,477 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:01:45,477 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:01:45,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 20:01:45,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:01:45,682 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:01:45,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:01:45,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1346228729, now seen corresponding path program 1 times [2024-10-23 20:01:45,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:01:45,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627339216] [2024-10-23 20:01:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:01:45,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:01:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:46,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:01:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:46,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:01:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:46,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:01:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627339216] [2024-10-23 20:01:46,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627339216] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:01:46,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635631713] [2024-10-23 20:01:46,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:01:46,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:01:46,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:01:46,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:01:46,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 20:01:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:46,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-23 20:01:46,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:01:46,334 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 [2024-10-23 20:01:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:01:46,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:01:46,820 INFO L349 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size [2024-10-23 20:01:46,821 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 [2024-10-23 20:01:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:46,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635631713] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:01:46,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:01:46,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 22 [2024-10-23 20:01:46,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215605657] [2024-10-23 20:01:46,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:01:46,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-23 20:01:46,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:01:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-23 20:01:46,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2024-10-23 20:01:46,920 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) [2024-10-23 20:01:47,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:01:47,182 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-10-23 20:01:47,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-23 20:01:47,183 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 [2024-10-23 20:01:47,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:01:47,184 INFO L225 Difference]: With dead ends: 25 [2024-10-23 20:01:47,184 INFO L226 Difference]: Without dead ends: 23 [2024-10-23 20:01:47,185 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 [2024-10-23 20:01:47,186 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 [2024-10-23 20:01:47,186 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] [2024-10-23 20:01:47,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-23 20:01:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-10-23 20:01:47,191 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) [2024-10-23 20:01:47,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-10-23 20:01:47,192 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 22 [2024-10-23 20:01:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:01:47,192 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-10-23 20:01:47,193 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) [2024-10-23 20:01:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-10-23 20:01:47,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-23 20:01:47,193 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:01:47,193 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:01:47,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 20:01:47,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-23 20:01:47,398 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:01:47,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:01:47,398 INFO L85 PathProgramCache]: Analyzing trace with hash 909762896, now seen corresponding path program 2 times [2024-10-23 20:01:47,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:01:47,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190763411] [2024-10-23 20:01:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:01:47,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:01:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:47,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:01:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:47,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:01:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:47,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:01:47,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190763411] [2024-10-23 20:01:47,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190763411] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:01:47,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789789764] [2024-10-23 20:01:47,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 20:01:47,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:01:47,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:01:47,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:01:47,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 20:01:48,020 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 20:01:48,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:01:48,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-23 20:01:48,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:01:48,047 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 [2024-10-23 20:01:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:48,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:01:48,481 INFO L349 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2024-10-23 20:01:48,482 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 [2024-10-23 20:01:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:48,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789789764] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:01:48,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:01:48,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-10-23 20:01:48,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502893698] [2024-10-23 20:01:48,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:01:48,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-23 20:01:48,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:01:48,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-23 20:01:48,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-10-23 20:01:48,540 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) [2024-10-23 20:01:49,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:01:49,044 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2024-10-23 20:01:49,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-23 20:01:49,045 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 [2024-10-23 20:01:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:01:49,046 INFO L225 Difference]: With dead ends: 57 [2024-10-23 20:01:49,046 INFO L226 Difference]: Without dead ends: 55 [2024-10-23 20:01:49,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190 [2024-10-23 20:01:49,047 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 54 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-10-23 20:01:49,048 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] [2024-10-23 20:01:49,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-23 20:01:49,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 28. [2024-10-23 20:01:49,061 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) [2024-10-23 20:01:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-10-23 20:01:49,063 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 25 [2024-10-23 20:01:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:01:49,064 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-10-23 20:01:49,064 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) [2024-10-23 20:01:49,066 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-10-23 20:01:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 20:01:49,067 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:01:49,067 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:01:49,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 20:01:49,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:01:49,268 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:01:49,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:01:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1905423184, now seen corresponding path program 3 times [2024-10-23 20:01:49,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:01:49,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259069100] [2024-10-23 20:01:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:01:49,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:01:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:49,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:01:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:49,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:01:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:49,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:01:49,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259069100] [2024-10-23 20:01:49,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259069100] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:01:49,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674221685] [2024-10-23 20:01:49,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 20:01:49,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:01:49,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:01:49,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:01:49,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 20:01:49,877 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-23 20:01:49,877 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:01:49,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-23 20:01:49,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:01:50,016 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 [2024-10-23 20:01:50,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:50,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:50,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:50,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:50,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:01:50,077 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 [2024-10-23 20:01:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:01:50,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:01:50,806 INFO L349 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2024-10-23 20:01:50,806 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 [2024-10-23 20:01:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:51,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674221685] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:01:51,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:01:51,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 11] total 31 [2024-10-23 20:01:51,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273068371] [2024-10-23 20:01:51,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:01:51,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-23 20:01:51,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:01:51,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-23 20:01:51,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2024-10-23 20:01:51,035 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) [2024-10-23 20:01:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:01:52,198 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2024-10-23 20:01:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-23 20:01:52,198 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 [2024-10-23 20:01:52,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:01:52,199 INFO L225 Difference]: With dead ends: 60 [2024-10-23 20:01:52,200 INFO L226 Difference]: Without dead ends: 58 [2024-10-23 20:01:52,201 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 [2024-10-23 20:01:52,201 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, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:01:52,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 280 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 540 Invalid, 1 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:01:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-23 20:01:52,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 25. [2024-10-23 20:01:52,213 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) [2024-10-23 20:01:52,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-10-23 20:01:52,217 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 27 [2024-10-23 20:01:52,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:01:52,218 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-10-23 20:01:52,218 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) [2024-10-23 20:01:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-10-23 20:01:52,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-23 20:01:52,219 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:01:52,219 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:01:52,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-23 20:01:52,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:01:52,420 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:01:52,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:01:52,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1508015463, now seen corresponding path program 4 times [2024-10-23 20:01:52,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:01:52,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018190670] [2024-10-23 20:01:52,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:01:52,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:01:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:52,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:01:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:52,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:01:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:52,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:01:52,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018190670] [2024-10-23 20:01:52,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018190670] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:01:52,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314664681] [2024-10-23 20:01:52,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 20:01:52,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:01:52,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:01:52,894 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:01:52,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 20:01:52,986 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 20:01:52,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:01:52,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-23 20:01:52,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:01:53,019 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 [2024-10-23 20:01:53,067 INFO L349 Elim1Store]: treesize reduction 49, result has 29.0 percent of original size [2024-10-23 20:01:53,068 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 [2024-10-23 20:01:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:53,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:01:53,772 INFO L349 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2024-10-23 20:01:53,773 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 [2024-10-23 20:01:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:53,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314664681] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:01:53,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:01:53,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2024-10-23 20:01:53,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548289464] [2024-10-23 20:01:53,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:01:53,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-23 20:01:53,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:01:53,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-23 20:01:53,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2024-10-23 20:01:53,815 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) [2024-10-23 20:01:54,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:01:54,611 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2024-10-23 20:01:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-23 20:01:54,612 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 [2024-10-23 20:01:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:01:54,612 INFO L225 Difference]: With dead ends: 63 [2024-10-23 20:01:54,612 INFO L226 Difference]: Without dead ends: 47 [2024-10-23 20:01:54,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=507, Invalid=2043, Unknown=0, NotChecked=0, Total=2550 [2024-10-23 20:01:54,615 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 [2024-10-23 20:01:54,615 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] [2024-10-23 20:01:54,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-23 20:01:54,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2024-10-23 20:01:54,627 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) [2024-10-23 20:01:54,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-10-23 20:01:54,628 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 28 [2024-10-23 20:01:54,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:01:54,629 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-10-23 20:01:54,629 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) [2024-10-23 20:01:54,629 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-10-23 20:01:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-23 20:01:54,630 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:01:54,630 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:01:54,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 20:01:54,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:01:54,831 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:01:54,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:01:54,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1381876491, now seen corresponding path program 5 times [2024-10-23 20:01:54,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:01:54,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400418465] [2024-10-23 20:01:54,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:01:54,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:01:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:55,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:01:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:55,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:01:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:55,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:01:55,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400418465] [2024-10-23 20:01:55,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400418465] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:01:55,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996533686] [2024-10-23 20:01:55,410 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-23 20:01:55,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:01:55,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:01:55,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:01:55,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 20:01:55,503 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-23 20:01:55,503 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:01:55,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-23 20:01:55,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:01:55,546 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 [2024-10-23 20:01:55,605 INFO L349 Elim1Store]: treesize reduction 54, result has 28.9 percent of original size [2024-10-23 20:01:55,605 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 [2024-10-23 20:01:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:56,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:01:56,407 INFO L349 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2024-10-23 20:01:56,408 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 [2024-10-23 20:01:56,484 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:56,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996533686] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:01:56,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:01:56,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2024-10-23 20:01:56,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382922168] [2024-10-23 20:01:56,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:01:56,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-23 20:01:56,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:01:56,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-23 20:01:56,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2024-10-23 20:01:56,487 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) [2024-10-23 20:01:57,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:01:57,612 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2024-10-23 20:01:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-23 20:01:57,615 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 [2024-10-23 20:01:57,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:01:57,616 INFO L225 Difference]: With dead ends: 94 [2024-10-23 20:01:57,618 INFO L226 Difference]: Without dead ends: 92 [2024-10-23 20:01:57,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=579, Invalid=3081, Unknown=0, NotChecked=0, Total=3660 [2024-10-23 20:01:57,620 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 [2024-10-23 20:01:57,620 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] [2024-10-23 20:01:57,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-23 20:01:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 49. [2024-10-23 20:01:57,642 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) [2024-10-23 20:01:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-10-23 20:01:57,643 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 32 [2024-10-23 20:01:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:01:57,644 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-10-23 20:01:57,644 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) [2024-10-23 20:01:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-10-23 20:01:57,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-23 20:01:57,645 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:01:57,645 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:01:57,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-23 20:01:57,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:01:57,850 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:01:57,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:01:57,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1092155737, now seen corresponding path program 6 times [2024-10-23 20:01:57,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:01:57,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534455506] [2024-10-23 20:01:57,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:01:57,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:01:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:58,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:01:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:58,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:01:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:01:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:58,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:01:58,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534455506] [2024-10-23 20:01:58,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534455506] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:01:58,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279726999] [2024-10-23 20:01:58,431 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-23 20:01:58,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:01:58,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:01:58,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:01:58,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 20:01:58,531 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-23 20:01:58,531 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:01:58,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-23 20:01:58,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:01:58,567 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 [2024-10-23 20:01:58,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,627 INFO L349 Elim1Store]: treesize reduction 106, result has 15.2 percent of original size [2024-10-23 20:01:58,627 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 [2024-10-23 20:01:58,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:01:58,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:01:58,720 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 [2024-10-23 20:01:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:59,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:01:59,764 INFO L349 Elim1Store]: treesize reduction 156, result has 16.6 percent of original size [2024-10-23 20:01:59,765 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 [2024-10-23 20:01:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:01:59,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279726999] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:01:59,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:01:59,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 33 [2024-10-23 20:01:59,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245438647] [2024-10-23 20:01:59,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:01:59,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-23 20:01:59,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:01:59,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-23 20:01:59,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2024-10-23 20:01:59,911 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) [2024-10-23 20:02:00,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:02:00,622 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2024-10-23 20:02:00,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-23 20:02:00,623 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 [2024-10-23 20:02:00,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:02:00,623 INFO L225 Difference]: With dead ends: 97 [2024-10-23 20:02:00,624 INFO L226 Difference]: Without dead ends: 95 [2024-10-23 20:02:00,624 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 [2024-10-23 20:02:00,625 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 [2024-10-23 20:02:00,625 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] [2024-10-23 20:02:00,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-23 20:02:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 37. [2024-10-23 20:02:00,642 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) [2024-10-23 20:02:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-10-23 20:02:00,643 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 32 [2024-10-23 20:02:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:02:00,644 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-10-23 20:02:00,644 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) [2024-10-23 20:02:00,644 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-10-23 20:02:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-23 20:02:00,645 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:02:00,645 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:02:00,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-23 20:02:00,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:00,846 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:02:00,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:02:00,846 INFO L85 PathProgramCache]: Analyzing trace with hash 226229708, now seen corresponding path program 7 times [2024-10-23 20:02:00,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:02:00,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884122104] [2024-10-23 20:02:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:02:00,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:02:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:01,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:02:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:01,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:02:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:01,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:02:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884122104] [2024-10-23 20:02:01,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884122104] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:02:01,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761295944] [2024-10-23 20:02:01,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-23 20:02:01,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:01,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:02:01,502 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:02:01,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 20:02:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:01,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-23 20:02:01,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:02:01,654 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 [2024-10-23 20:02:01,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:01,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:01,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:02:01,714 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 [2024-10-23 20:02:01,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:01,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:01,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:01,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:01,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:02:01,766 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 [2024-10-23 20:02:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:02:02,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:02:02,746 INFO L349 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2024-10-23 20:02:02,747 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 [2024-10-23 20:02:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:02,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761295944] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:02:02,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:02:02,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 40 [2024-10-23 20:02:02,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161377689] [2024-10-23 20:02:02,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:02:02,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-23 20:02:02,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:02:02,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-23 20:02:02,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1328, Unknown=0, NotChecked=0, Total=1560 [2024-10-23 20:02:02,806 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) [2024-10-23 20:02:03,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:02:03,996 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2024-10-23 20:02:03,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-23 20:02:03,996 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 [2024-10-23 20:02:03,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:02:03,997 INFO L225 Difference]: With dead ends: 97 [2024-10-23 20:02:03,997 INFO L226 Difference]: Without dead ends: 75 [2024-10-23 20:02:03,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=812, Invalid=3610, Unknown=0, NotChecked=0, Total=4422 [2024-10-23 20:02:03,999 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, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 20:02:03,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 178 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 20:02:04,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-23 20:02:04,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2024-10-23 20:02:04,025 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) [2024-10-23 20:02:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2024-10-23 20:02:04,025 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 35 [2024-10-23 20:02:04,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:02:04,026 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2024-10-23 20:02:04,026 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) [2024-10-23 20:02:04,026 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2024-10-23 20:02:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-23 20:02:04,027 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:02:04,027 INFO L215 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:02:04,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-23 20:02:04,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-23 20:02:04,232 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:02:04,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:02:04,232 INFO L85 PathProgramCache]: Analyzing trace with hash 595307595, now seen corresponding path program 8 times [2024-10-23 20:02:04,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:02:04,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400458491] [2024-10-23 20:02:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:02:04,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:02:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:04,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:02:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:04,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:02:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:04,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:02:04,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400458491] [2024-10-23 20:02:04,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400458491] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:02:04,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094867669] [2024-10-23 20:02:04,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 20:02:04,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:04,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:02:04,827 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:02:04,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-23 20:02:04,918 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 20:02:04,919 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:02:04,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-23 20:02:04,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:02:04,956 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 [2024-10-23 20:02:04,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,017 INFO L349 Elim1Store]: treesize reduction 106, result has 15.2 percent of original size [2024-10-23 20:02:05,018 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 [2024-10-23 20:02:05,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:05,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:02:05,116 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 [2024-10-23 20:02:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:05,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:02:06,230 INFO L349 Elim1Store]: treesize reduction 156, result has 16.6 percent of original size [2024-10-23 20:02:06,230 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 [2024-10-23 20:02:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:06,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094867669] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:02:06,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:02:06,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 38 [2024-10-23 20:02:06,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416171690] [2024-10-23 20:02:06,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:02:06,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-23 20:02:06,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:02:06,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-23 20:02:06,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2024-10-23 20:02:06,404 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) [2024-10-23 20:02:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:02:07,657 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2024-10-23 20:02:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-23 20:02:07,657 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 [2024-10-23 20:02:07,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:02:07,659 INFO L225 Difference]: With dead ends: 104 [2024-10-23 20:02:07,659 INFO L226 Difference]: Without dead ends: 102 [2024-10-23 20:02:07,660 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 [2024-10-23 20:02:07,660 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, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 20:02:07,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 519 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1004 Invalid, 1 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 20:02:07,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-23 20:02:07,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 41. [2024-10-23 20:02:07,679 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) [2024-10-23 20:02:07,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-10-23 20:02:07,680 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2024-10-23 20:02:07,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:02:07,680 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-10-23 20:02:07,680 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) [2024-10-23 20:02:07,680 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-10-23 20:02:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 20:02:07,681 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:02:07,681 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:02:07,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-23 20:02:07,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:07,882 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:02:07,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:02:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1783665168, now seen corresponding path program 9 times [2024-10-23 20:02:07,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:02:07,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896541508] [2024-10-23 20:02:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:02:07,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:02:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:08,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:02:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:08,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:02:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:08,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:02:08,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896541508] [2024-10-23 20:02:08,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896541508] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:02:08,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200042819] [2024-10-23 20:02:08,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 20:02:08,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:08,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:02:08,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:02:08,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-23 20:02:08,840 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-23 20:02:08,840 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:02:08,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-23 20:02:08,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:02:08,892 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 [2024-10-23 20:02:08,954 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-10-23 20:02:08,955 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 [2024-10-23 20:02:09,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:09,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:09,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:09,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:09,032 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:02:09,033 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 [2024-10-23 20:02:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:09,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:02:10,074 INFO L349 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2024-10-23 20:02:10,074 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 [2024-10-23 20:02:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200042819] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:02:10,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:02:10,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2024-10-23 20:02:10,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325963251] [2024-10-23 20:02:10,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:02:10,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-23 20:02:10,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:02:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-23 20:02:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1393, Unknown=0, NotChecked=0, Total=1640 [2024-10-23 20:02:10,162 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) [2024-10-23 20:02:11,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:02:11,398 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2024-10-23 20:02:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-23 20:02:11,398 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 [2024-10-23 20:02:11,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:02:11,399 INFO L225 Difference]: With dead ends: 115 [2024-10-23 20:02:11,399 INFO L226 Difference]: Without dead ends: 113 [2024-10-23 20:02:11,400 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 [2024-10-23 20:02:11,400 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 [2024-10-23 20:02:11,400 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] [2024-10-23 20:02:11,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-23 20:02:11,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 64. [2024-10-23 20:02:11,440 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) [2024-10-23 20:02:11,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2024-10-23 20:02:11,440 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 39 [2024-10-23 20:02:11,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:02:11,440 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2024-10-23 20:02:11,441 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) [2024-10-23 20:02:11,441 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2024-10-23 20:02:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-23 20:02:11,441 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:02:11,441 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:02:11,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-23 20:02:11,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-23 20:02:11,642 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:02:11,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:02:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2070949543, now seen corresponding path program 10 times [2024-10-23 20:02:11,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:02:11,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525121346] [2024-10-23 20:02:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:02:11,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:02:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:12,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:02:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:12,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:02:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 1 proven. 75 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:12,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:02:12,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525121346] [2024-10-23 20:02:12,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525121346] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:02:12,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326719952] [2024-10-23 20:02:12,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 20:02:12,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:12,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:02:12,389 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:02:12,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-23 20:02:12,617 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 20:02:12,617 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:02:12,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-23 20:02:12,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:02:12,747 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 [2024-10-23 20:02:12,814 INFO L349 Elim1Store]: treesize reduction 136, result has 13.9 percent of original size [2024-10-23 20:02:12,814 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 [2024-10-23 20:02:12,948 INFO L349 Elim1Store]: treesize reduction 327, result has 12.8 percent of original size [2024-10-23 20:02:12,948 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 [2024-10-23 20:02:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 1 proven. 75 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:13,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:02:14,339 INFO L349 Elim1Store]: treesize reduction 156, result has 16.6 percent of original size [2024-10-23 20:02:14,340 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 [2024-10-23 20:02:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 3 proven. 73 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326719952] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:02:14,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:02:14,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2024-10-23 20:02:14,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926789793] [2024-10-23 20:02:14,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:02:14,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-23 20:02:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:02:14,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-23 20:02:14,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2114, Unknown=0, NotChecked=0, Total=2352 [2024-10-23 20:02:14,594 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) [2024-10-23 20:02:16,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:02:16,131 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2024-10-23 20:02:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-23 20:02:16,131 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 [2024-10-23 20:02:16,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:02:16,132 INFO L225 Difference]: With dead ends: 118 [2024-10-23 20:02:16,132 INFO L226 Difference]: Without dead ends: 116 [2024-10-23 20:02:16,133 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 [2024-10-23 20:02:16,134 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 [2024-10-23 20:02:16,134 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] [2024-10-23 20:02:16,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-23 20:02:16,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 46. [2024-10-23 20:02:16,159 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) [2024-10-23 20:02:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2024-10-23 20:02:16,159 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 40 [2024-10-23 20:02:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:02:16,159 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2024-10-23 20:02:16,160 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) [2024-10-23 20:02:16,160 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2024-10-23 20:02:16,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-23 20:02:16,160 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:02:16,161 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:02:16,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-23 20:02:16,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-23 20:02:16,361 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:02:16,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:02:16,362 INFO L85 PathProgramCache]: Analyzing trace with hash 171584711, now seen corresponding path program 11 times [2024-10-23 20:02:16,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:02:16,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957308749] [2024-10-23 20:02:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:02:16,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:02:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:17,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:02:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:17,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:02:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:17,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:02:17,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957308749] [2024-10-23 20:02:17,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957308749] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:02:17,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65437112] [2024-10-23 20:02:17,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-23 20:02:17,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:17,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:02:17,094 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:02:17,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-23 20:02:17,226 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-10-23 20:02:17,226 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:02:17,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-23 20:02:17,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:02:17,243 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 [2024-10-23 20:02:17,292 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-10-23 20:02:17,293 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 [2024-10-23 20:02:17,393 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-10-23 20:02:17,393 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 [2024-10-23 20:02:17,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:17,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:17,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:17,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:17,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:17,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:17,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:17,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:17,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:02:17,484 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 [2024-10-23 20:02:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:18,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:02:19,040 INFO L349 Elim1Store]: treesize reduction 40, result has 38.5 percent of original size [2024-10-23 20:02:19,040 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 [2024-10-23 20:02:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:19,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65437112] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:02:19,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:02:19,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 47 [2024-10-23 20:02:19,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807387049] [2024-10-23 20:02:19,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:02:19,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-23 20:02:19,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:02:19,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-23 20:02:19,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1851, Unknown=0, NotChecked=0, Total=2162 [2024-10-23 20:02:19,099 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) [2024-10-23 20:02:20,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:02:20,661 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-10-23 20:02:20,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-23 20:02:20,662 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 [2024-10-23 20:02:20,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:02:20,663 INFO L225 Difference]: With dead ends: 104 [2024-10-23 20:02:20,663 INFO L226 Difference]: Without dead ends: 102 [2024-10-23 20:02:20,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=861, Invalid=4251, Unknown=0, NotChecked=0, Total=5112 [2024-10-23 20:02:20,664 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, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:02:20,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 263 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:02:20,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-23 20:02:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 49. [2024-10-23 20:02:20,693 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) [2024-10-23 20:02:20,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-10-23 20:02:20,693 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 42 [2024-10-23 20:02:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:02:20,694 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-10-23 20:02:20,694 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) [2024-10-23 20:02:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-10-23 20:02:20,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-23 20:02:20,694 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:02:20,694 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:02:20,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-23 20:02:20,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-23 20:02:20,895 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:02:20,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:02:20,895 INFO L85 PathProgramCache]: Analyzing trace with hash 674261648, now seen corresponding path program 12 times [2024-10-23 20:02:20,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:02:20,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173163157] [2024-10-23 20:02:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:02:20,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:02:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:21,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:02:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:21,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:02:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 78 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:21,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:02:21,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173163157] [2024-10-23 20:02:21,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173163157] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:02:21,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289900264] [2024-10-23 20:02:21,123 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-23 20:02:21,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:21,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:02:21,125 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:02:21,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-23 20:02:21,350 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-10-23 20:02:21,350 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:02:21,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-23 20:02:21,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:02:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 100 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:21,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:02:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 100 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:21,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289900264] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:02:21,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:02:21,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2024-10-23 20:02:21,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86176586] [2024-10-23 20:02:21,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:02:21,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-23 20:02:21,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:02:21,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-23 20:02:21,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2024-10-23 20:02:21,644 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) [2024-10-23 20:02:21,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:02:21,801 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2024-10-23 20:02:21,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-23 20:02:21,801 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 [2024-10-23 20:02:21,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:02:21,802 INFO L225 Difference]: With dead ends: 95 [2024-10-23 20:02:21,802 INFO L226 Difference]: Without dead ends: 64 [2024-10-23 20:02:21,802 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 [2024-10-23 20:02:21,803 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 [2024-10-23 20:02:21,803 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] [2024-10-23 20:02:21,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-23 20:02:21,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2024-10-23 20:02:21,832 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) [2024-10-23 20:02:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-10-23 20:02:21,832 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 45 [2024-10-23 20:02:21,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:02:21,833 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-10-23 20:02:21,833 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) [2024-10-23 20:02:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-10-23 20:02:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-23 20:02:21,833 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:02:21,834 INFO L215 NwaCegarLoop]: trace histogram [10, 7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:02:21,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-23 20:02:22,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-23 20:02:22,034 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:02:22,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:02:22,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1689792528, now seen corresponding path program 13 times [2024-10-23 20:02:22,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:02:22,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335007641] [2024-10-23 20:02:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:02:22,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:02:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:22,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:02:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:22,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:02:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 2 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:22,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:02:22,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335007641] [2024-10-23 20:02:22,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335007641] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:02:22,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976455888] [2024-10-23 20:02:22,856 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-23 20:02:22,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:22,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:02:22,857 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:02:22,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-23 20:02:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:22,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-23 20:02:22,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:02:23,204 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 [2024-10-23 20:02:23,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,267 INFO L349 Elim1Store]: treesize reduction 69, result has 21.6 percent of original size [2024-10-23 20:02:23,268 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 [2024-10-23 20:02:23,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,411 INFO L349 Elim1Store]: treesize reduction 171, result has 19.7 percent of original size [2024-10-23 20:02:23,411 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 [2024-10-23 20:02:23,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:23,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:02:23,568 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 [2024-10-23 20:02:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 112 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:02:25,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:02:25,873 INFO L349 Elim1Store]: treesize reduction 292, result has 12.3 percent of original size [2024-10-23 20:02:25,873 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 [2024-10-23 20:02:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:26,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976455888] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:02:26,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:02:26,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 21] total 61 [2024-10-23 20:02:26,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048629731] [2024-10-23 20:02:26,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:02:26,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-10-23 20:02:26,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:02:26,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-10-23 20:02:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3355, Unknown=0, NotChecked=0, Total=3660 [2024-10-23 20:02:26,739 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) [2024-10-23 20:02:35,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:02:35,121 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2024-10-23 20:02:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-23 20:02:35,121 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 [2024-10-23 20:02:35,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:02:35,122 INFO L225 Difference]: With dead ends: 112 [2024-10-23 20:02:35,122 INFO L226 Difference]: Without dead ends: 110 [2024-10-23 20:02:35,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=738, Invalid=7451, Unknown=1, NotChecked=0, Total=8190 [2024-10-23 20:02:35,124 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, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:02:35,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 966 Invalid, 2202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 20:02:35,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-10-23 20:02:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 49. [2024-10-23 20:02:35,157 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) [2024-10-23 20:02:35,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-10-23 20:02:35,158 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 45 [2024-10-23 20:02:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:02:35,158 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-10-23 20:02:35,158 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) [2024-10-23 20:02:35,158 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-10-23 20:02:35,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-23 20:02:35,159 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:02:35,159 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:02:35,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-23 20:02:35,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:35,359 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:02:35,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:02:35,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1319056277, now seen corresponding path program 14 times [2024-10-23 20:02:35,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:02:35,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868160470] [2024-10-23 20:02:35,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:02:35,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:02:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:36,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:02:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:36,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:02:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:36,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:02:36,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868160470] [2024-10-23 20:02:36,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868160470] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:02:36,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843209967] [2024-10-23 20:02:36,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 20:02:36,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:36,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:02:36,238 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:02:36,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-23 20:02:36,367 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 20:02:36,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:02:36,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-23 20:02:36,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:02:36,520 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 [2024-10-23 20:02:36,572 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-10-23 20:02:36,572 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 [2024-10-23 20:02:36,650 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-10-23 20:02:36,650 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 [2024-10-23 20:02:36,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:36,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:36,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:36,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:36,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:36,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:36,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:36,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:02:36,744 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:02:36,745 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 [2024-10-23 20:02:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:02:37,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:02:38,503 INFO L349 Elim1Store]: treesize reduction 156, result has 15.7 percent of original size [2024-10-23 20:02:38,504 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 [2024-10-23 20:02:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:38,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843209967] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:02:38,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:02:38,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 19] total 55 [2024-10-23 20:02:38,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043521968] [2024-10-23 20:02:38,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:02:38,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-23 20:02:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:02:38,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-23 20:02:38,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2615, Unknown=0, NotChecked=0, Total=2970 [2024-10-23 20:02:38,651 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) [2024-10-23 20:02:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:02:41,228 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2024-10-23 20:02:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-23 20:02:41,229 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 [2024-10-23 20:02:41,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:02:41,230 INFO L225 Difference]: With dead ends: 141 [2024-10-23 20:02:41,230 INFO L226 Difference]: Without dead ends: 139 [2024-10-23 20:02:41,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2022 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1265, Invalid=7477, Unknown=0, NotChecked=0, Total=8742 [2024-10-23 20:02:41,233 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 174 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2024-10-23 20:02:41,233 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] [2024-10-23 20:02:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-23 20:02:41,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 78. [2024-10-23 20:02:41,307 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) [2024-10-23 20:02:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2024-10-23 20:02:41,308 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 46 [2024-10-23 20:02:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:02:41,308 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2024-10-23 20:02:41,308 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) [2024-10-23 20:02:41,308 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2024-10-23 20:02:41,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-23 20:02:41,309 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:02:41,309 INFO L215 NwaCegarLoop]: trace histogram [10, 8, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:02:41,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-23 20:02:41,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-23 20:02:41,510 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:02:41,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:02:41,510 INFO L85 PathProgramCache]: Analyzing trace with hash -697256281, now seen corresponding path program 15 times [2024-10-23 20:02:41,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:02:41,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153875689] [2024-10-23 20:02:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:02:41,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:02:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:42,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:02:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:42,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:02:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 1 proven. 131 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:42,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:02:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153875689] [2024-10-23 20:02:42,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153875689] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:02:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073623939] [2024-10-23 20:02:42,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 20:02:42,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:42,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:02:42,293 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:02:42,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-23 20:02:43,214 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-10-23 20:02:43,215 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:02:43,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-23 20:02:43,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:02:43,419 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 [2024-10-23 20:02:43,485 INFO L349 Elim1Store]: treesize reduction 136, result has 13.9 percent of original size [2024-10-23 20:02:43,485 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 [2024-10-23 20:02:43,608 INFO L349 Elim1Store]: treesize reduction 327, result has 12.8 percent of original size [2024-10-23 20:02:43,609 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 [2024-10-23 20:02:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 1 proven. 131 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:45,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:02:45,848 INFO L349 Elim1Store]: treesize reduction 156, result has 16.6 percent of original size [2024-10-23 20:02:45,849 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 [2024-10-23 20:02:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 3 proven. 129 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:46,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073623939] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:02:46,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:02:46,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 61 [2024-10-23 20:02:46,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337474656] [2024-10-23 20:02:46,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:02:46,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-10-23 20:02:46,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:02:46,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-10-23 20:02:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3430, Unknown=0, NotChecked=0, Total=3660 [2024-10-23 20:02:46,581 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) [2024-10-23 20:02:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:02:52,224 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2024-10-23 20:02:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-23 20:02:52,225 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 [2024-10-23 20:02:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:02:52,226 INFO L225 Difference]: With dead ends: 144 [2024-10-23 20:02:52,226 INFO L226 Difference]: Without dead ends: 142 [2024-10-23 20:02:52,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=617, Invalid=7755, Unknown=0, NotChecked=0, Total=8372 [2024-10-23 20:02:52,227 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 131 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 20:02:52,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1193 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2480 Invalid, 2 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 20:02:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-10-23 20:02:52,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 54. [2024-10-23 20:02:52,281 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) [2024-10-23 20:02:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-10-23 20:02:52,282 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 48 [2024-10-23 20:02:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:02:52,282 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-10-23 20:02:52,282 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) [2024-10-23 20:02:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-10-23 20:02:52,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-23 20:02:52,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:02:52,283 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:02:52,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-23 20:02:52,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-23 20:02:52,483 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:02:52,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:02:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1344538516, now seen corresponding path program 16 times [2024-10-23 20:02:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:02:52,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787680668] [2024-10-23 20:02:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:02:52,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:02:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:53,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:02:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:53,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:02:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:02:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:53,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:02:53,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787680668] [2024-10-23 20:02:53,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787680668] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:02:53,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984918400] [2024-10-23 20:02:53,515 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 20:02:53,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:02:53,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:02:53,517 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:02:53,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-23 20:02:53,829 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 20:02:53,829 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:02:53,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-23 20:02:53,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:02:53,857 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 [2024-10-23 20:02:53,902 INFO L349 Elim1Store]: treesize reduction 52, result has 27.8 percent of original size [2024-10-23 20:02:53,902 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 [2024-10-23 20:02:53,964 INFO L349 Elim1Store]: treesize reduction 70, result has 23.9 percent of original size [2024-10-23 20:02:53,964 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 [2024-10-23 20:02:54,056 INFO L349 Elim1Store]: treesize reduction 138, result has 22.9 percent of original size [2024-10-23 20:02:54,057 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 [2024-10-23 20:02:54,173 INFO L349 Elim1Store]: treesize reduction 172, result has 20.0 percent of original size [2024-10-23 20:02:54,174 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 [2024-10-23 20:02:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:55,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:02:56,643 INFO L349 Elim1Store]: treesize reduction 50, result has 38.3 percent of original size [2024-10-23 20:02:56,643 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 [2024-10-23 20:02:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:02:56,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984918400] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:02:56,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:02:56,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 55 [2024-10-23 20:02:56,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587416355] [2024-10-23 20:02:56,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:02:56,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-23 20:02:56,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:02:56,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-23 20:02:56,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2662, Unknown=0, NotChecked=0, Total=2970 [2024-10-23 20:02:56,723 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) [2024-10-23 20:03:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:03:00,327 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2024-10-23 20:03:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-10-23 20:03:00,328 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 [2024-10-23 20:03:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:03:00,329 INFO L225 Difference]: With dead ends: 124 [2024-10-23 20:03:00,329 INFO L226 Difference]: Without dead ends: 122 [2024-10-23 20:03:00,329 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 [2024-10-23 20:03:00,330 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 [2024-10-23 20:03:00,330 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] [2024-10-23 20:03:00,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-23 20:03:00,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 57. [2024-10-23 20:03:00,384 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) [2024-10-23 20:03:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-10-23 20:03:00,384 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 49 [2024-10-23 20:03:00,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:03:00,385 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-10-23 20:03:00,385 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) [2024-10-23 20:03:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-10-23 20:03:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-23 20:03:00,385 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:03:00,385 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:03:00,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-23 20:03:00,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:03:00,586 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:03:00,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:03:00,587 INFO L85 PathProgramCache]: Analyzing trace with hash -276709173, now seen corresponding path program 17 times [2024-10-23 20:03:00,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:03:00,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398696898] [2024-10-23 20:03:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:03:00,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:03:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:03:00,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:03:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:03:00,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:03:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:03:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 127 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:03:00,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:03:00,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398696898] [2024-10-23 20:03:00,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398696898] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:03:00,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850066440] [2024-10-23 20:03:00,869 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-23 20:03:00,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:03:00,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:03:00,871 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:03:00,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-23 20:03:01,200 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-23 20:03:01,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:03:01,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-23 20:03:01,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:03:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 155 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:03:01,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:03:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 155 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:03:01,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850066440] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:03:01,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:03:01,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 33 [2024-10-23 20:03:01,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634179470] [2024-10-23 20:03:01,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:03:01,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-23 20:03:01,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:03:01,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-23 20:03:01,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2024-10-23 20:03:01,590 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) [2024-10-23 20:03:01,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:03:01,833 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2024-10-23 20:03:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-23 20:03:01,834 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 [2024-10-23 20:03:01,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:03:01,834 INFO L225 Difference]: With dead ends: 112 [2024-10-23 20:03:01,834 INFO L226 Difference]: Without dead ends: 75 [2024-10-23 20:03:01,835 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 [2024-10-23 20:03:01,835 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 [2024-10-23 20:03:01,836 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] [2024-10-23 20:03:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-23 20:03:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 57. [2024-10-23 20:03:01,888 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) [2024-10-23 20:03:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2024-10-23 20:03:01,889 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 52 [2024-10-23 20:03:01,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:03:01,889 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2024-10-23 20:03:01,889 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) [2024-10-23 20:03:01,889 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2024-10-23 20:03:01,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-23 20:03:01,890 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:03:01,890 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:03:01,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-23 20:03:02,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:03:02,090 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:03:02,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:03:02,091 INFO L85 PathProgramCache]: Analyzing trace with hash -537681264, now seen corresponding path program 18 times [2024-10-23 20:03:02,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:03:02,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355586590] [2024-10-23 20:03:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:03:02,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:03:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:03:03,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 20:03:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:03:03,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-23 20:03:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:03:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:03:03,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:03:03,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355586590] [2024-10-23 20:03:03,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355586590] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:03:03,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577134023] [2024-10-23 20:03:03,063 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-23 20:03:03,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:03:03,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:03:03,065 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:03:03,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-23 20:03:03,874 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-10-23 20:03:03,874 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:03:03,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-23 20:03:03,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:03:03,893 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 [2024-10-23 20:03:03,943 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-10-23 20:03:03,943 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 [2024-10-23 20:03:04,009 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-10-23 20:03:04,009 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 [2024-10-23 20:03:04,100 INFO L349 Elim1Store]: treesize reduction 128, result has 22.4 percent of original size [2024-10-23 20:03:04,101 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 [2024-10-23 20:03:04,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:03:04,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:03:04,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:03:04,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:03:04,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:03:04,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:03:04,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:03:04,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:03:04,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:03:04,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:03:04,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:03:04,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 20:03:04,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:03:04,192 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