./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ms3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/array-fpi/ms3.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 b493eaf5cbb9a8ad0f724257518d8f922b0657033a5eb7aa4f50992fe6ac33a4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 21:08:03,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 21:08:03,732 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 21:08:03,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 21:08:03,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 21:08:03,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 21:08:03,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 21:08:03,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 21:08:03,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 21:08:03,758 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 21:08:03,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 21:08:03,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 21:08:03,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 21:08:03,759 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 21:08:03,760 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 21:08:03,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 21:08:03,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 21:08:03,761 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 21:08:03,761 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 21:08:03,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 21:08:03,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 21:08:03,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 21:08:03,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 21:08:03,765 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 21:08:03,765 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 21:08:03,766 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 21:08:03,766 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 21:08:03,766 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 21:08:03,766 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 21:08:03,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 21:08:03,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 21:08:03,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 21:08:03,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 21:08:03,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 21:08:03,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 21:08:03,767 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 21:08:03,767 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 21:08:03,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 21:08:03,767 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 21:08:03,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 21:08:03,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 21:08:03,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 21:08:03,768 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b493eaf5cbb9a8ad0f724257518d8f922b0657033a5eb7aa4f50992fe6ac33a4 [2024-11-21 21:08:03,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 21:08:04,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 21:08:04,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 21:08:04,012 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 21:08:04,013 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 21:08:04,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms3.c [2024-11-21 21:08:05,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 21:08:05,341 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 21:08:05,342 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms3.c [2024-11-21 21:08:05,351 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8765dd4f6/e47b267dcc7a480f9cdd57708523676c/FLAG16dd5fde8 [2024-11-21 21:08:05,363 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8765dd4f6/e47b267dcc7a480f9cdd57708523676c [2024-11-21 21:08:05,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 21:08:05,367 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 21:08:05,370 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 21:08:05,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 21:08:05,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 21:08:05,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3719d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05, skipping insertion in model container [2024-11-21 21:08:05,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,391 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 21:08:05,583 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms3.c[586,599] [2024-11-21 21:08:05,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 21:08:05,614 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 21:08:05,623 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms3.c[586,599] [2024-11-21 21:08:05,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 21:08:05,647 INFO L204 MainTranslator]: Completed translation [2024-11-21 21:08:05,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05 WrapperNode [2024-11-21 21:08:05,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 21:08:05,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 21:08:05,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 21:08:05,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 21:08:05,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,676 INFO L138 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-11-21 21:08:05,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 21:08:05,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 21:08:05,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 21:08:05,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 21:08:05,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,688 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,697 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 6, 4, 2]. 43 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0]. The 3 writes are split as follows [0, 0, 2, 1]. [2024-11-21 21:08:05,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,702 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 21:08:05,707 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 21:08:05,707 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 21:08:05,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 21:08:05,708 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (1/1) ... [2024-11-21 21:08:05,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 21:08:05,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:08:05,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-21 21:08:05,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-21 21:08:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 21:08:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 21:08:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 21:08:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 21:08:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-21 21:08:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 21:08:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 21:08:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 21:08:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 21:08:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-21 21:08:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-21 21:08:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 21:08:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 21:08:05,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 21:08:05,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 21:08:05,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 21:08:05,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-21 21:08:05,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 21:08:05,829 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 21:08:05,830 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 21:08:05,935 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-21 21:08:05,935 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 21:08:05,943 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 21:08:05,943 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-21 21:08:05,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:08:05 BoogieIcfgContainer [2024-11-21 21:08:05,945 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 21:08:05,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 21:08:05,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 21:08:05,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 21:08:05,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:08:05" (1/3) ... [2024-11-21 21:08:05,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5416f60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:08:05, skipping insertion in model container [2024-11-21 21:08:05,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:08:05" (2/3) ... [2024-11-21 21:08:05,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5416f60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:08:05, skipping insertion in model container [2024-11-21 21:08:05,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:08:05" (3/3) ... [2024-11-21 21:08:05,953 INFO L112 eAbstractionObserver]: Analyzing ICFG ms3.c [2024-11-21 21:08:05,965 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 21:08:05,966 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 21:08:06,014 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 21:08:06,018 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;@a4f6a86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 21:08:06,019 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 21:08:06,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:06,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-21 21:08:06,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:08:06,026 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:08:06,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:08:06,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:08:06,030 INFO L85 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2024-11-21 21:08:06,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:08:06,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427551129] [2024-11-21 21:08:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:08:06,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:08:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:08:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:08:06,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:08:06,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427551129] [2024-11-21 21:08:06,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427551129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:08:06,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:08:06,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:08:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935536828] [2024-11-21 21:08:06,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:08:06,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-21 21:08:06,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:08:06,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-21 21:08:06,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-21 21:08:06,194 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:08:06,203 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2024-11-21 21:08:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 21:08:06,205 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-21 21:08:06,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:08:06,210 INFO L225 Difference]: With dead ends: 34 [2024-11-21 21:08:06,210 INFO L226 Difference]: Without dead ends: 15 [2024-11-21 21:08:06,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-21 21:08:06,214 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:08:06,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:08:06,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-21 21:08:06,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-21 21:08:06,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-21 21:08:06,235 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-11-21 21:08:06,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:08:06,236 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-21 21:08:06,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:06,236 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-21 21:08:06,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-21 21:08:06,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:08:06,236 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:08:06,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 21:08:06,237 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:08:06,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:08:06,237 INFO L85 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2024-11-21 21:08:06,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:08:06,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890683504] [2024-11-21 21:08:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:08:06,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:08:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:08:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:08:06,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:08:06,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890683504] [2024-11-21 21:08:06,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890683504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:08:06,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:08:06,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 21:08:06,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860398600] [2024-11-21 21:08:06,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:08:06,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:08:06,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:08:06,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:08:06,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:08:06,345 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:06,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:08:06,385 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-11-21 21:08:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:08:06,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-21 21:08:06,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:08:06,387 INFO L225 Difference]: With dead ends: 28 [2024-11-21 21:08:06,387 INFO L226 Difference]: Without dead ends: 20 [2024-11-21 21:08:06,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:08:06,389 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:08:06,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:08:06,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-21 21:08:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-21 21:08:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-21 21:08:06,395 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2024-11-21 21:08:06,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:08:06,395 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-21 21:08:06,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:06,396 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-21 21:08:06,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-21 21:08:06,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:08:06,397 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:08:06,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 21:08:06,397 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:08:06,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:08:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2024-11-21 21:08:06,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:08:06,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569788668] [2024-11-21 21:08:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:08:06,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:08:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:08:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 21:08:06,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:08:06,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569788668] [2024-11-21 21:08:06,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569788668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:08:06,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:08:06,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-21 21:08:06,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522166840] [2024-11-21 21:08:06,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:08:06,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 21:08:06,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:08:06,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 21:08:06,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:08:06,623 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:06,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:08:06,677 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-21 21:08:06,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 21:08:06,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-21 21:08:06,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:08:06,680 INFO L225 Difference]: With dead ends: 25 [2024-11-21 21:08:06,680 INFO L226 Difference]: Without dead ends: 21 [2024-11-21 21:08:06,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:08:06,681 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:08:06,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:08:06,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-21 21:08:06,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-11-21 21:08:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:06,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-21 21:08:06,687 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2024-11-21 21:08:06,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:08:06,688 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-21 21:08:06,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:06,688 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-21 21:08:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-21 21:08:06,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:08:06,689 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:08:06,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 21:08:06,690 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:08:06,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:08:06,691 INFO L85 PathProgramCache]: Analyzing trace with hash -422196611, now seen corresponding path program 1 times [2024-11-21 21:08:06,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:08:06,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949918643] [2024-11-21 21:08:06,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:08:06,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:08:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:08:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:08:06,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:08:06,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949918643] [2024-11-21 21:08:06,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949918643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:08:06,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706205958] [2024-11-21 21:08:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:08:06,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:08:06,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:08:06,838 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:08:06,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 21:08:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:08:06,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 21:08:06,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:08:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:08:06,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:08:07,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:08:07,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706205958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:08:07,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:08:07,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-21 21:08:07,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24253382] [2024-11-21 21:08:07,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:08:07,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-21 21:08:07,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:08:07,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-21 21:08:07,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-21 21:08:07,006 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:07,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:08:07,065 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-21 21:08:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-21 21:08:07,066 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-21 21:08:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:08:07,067 INFO L225 Difference]: With dead ends: 39 [2024-11-21 21:08:07,067 INFO L226 Difference]: Without dead ends: 25 [2024-11-21 21:08:07,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-21 21:08:07,070 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:08:07,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:08:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-21 21:08:07,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-21 21:08:07,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:07,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-21 21:08:07,076 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2024-11-21 21:08:07,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:08:07,076 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-21 21:08:07,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:07,077 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-21 21:08:07,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-21 21:08:07,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:08:07,077 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:08:07,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-21 21:08:07,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:08:07,282 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:08:07,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:08:07,283 INFO L85 PathProgramCache]: Analyzing trace with hash 692240447, now seen corresponding path program 2 times [2024-11-21 21:08:07,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:08:07,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444537442] [2024-11-21 21:08:07,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:08:07,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:08:07,322 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:08:07,324 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:08:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:08:07,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:08:07,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444537442] [2024-11-21 21:08:07,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444537442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:08:07,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596135372] [2024-11-21 21:08:07,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:08:07,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:08:07,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:08:07,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:08:07,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 21:08:07,917 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:08:07,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:08:07,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-21 21:08:07,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:08:07,977 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 29 treesize of output 1 [2024-11-21 21:08:08,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-21 21:08:08,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:08:08,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 29 [2024-11-21 21:08:08,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-21 21:08:08,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-21 21:08:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:08:08,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:08:08,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-21 21:08:08,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2024-11-21 21:08:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:08:08,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596135372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:08:08,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:08:08,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2024-11-21 21:08:08,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094489931] [2024-11-21 21:08:08,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:08:08,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-21 21:08:08,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:08:08,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-21 21:08:08,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2024-11-21 21:08:08,829 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:09,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:08:09,302 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2024-11-21 21:08:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-21 21:08:09,303 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-21 21:08:09,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:08:09,304 INFO L225 Difference]: With dead ends: 38 [2024-11-21 21:08:09,305 INFO L226 Difference]: Without dead ends: 27 [2024-11-21 21:08:09,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=275, Invalid=1131, Unknown=0, NotChecked=0, Total=1406 [2024-11-21 21:08:09,306 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 47 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:08:09,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 52 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:08:09,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-21 21:08:09,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-21 21:08:09,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-11-21 21:08:09,315 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2024-11-21 21:08:09,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:08:09,315 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-11-21 21:08:09,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:09,316 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-11-21 21:08:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-21 21:08:09,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:08:09,316 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:08:09,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 21:08:09,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:08:09,517 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:08:09,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:08:09,518 INFO L85 PathProgramCache]: Analyzing trace with hash -301520475, now seen corresponding path program 3 times [2024-11-21 21:08:09,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:08:09,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774433571] [2024-11-21 21:08:09,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:08:09,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:08:09,534 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-21 21:08:09,534 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:08:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:08:09,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:08:09,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774433571] [2024-11-21 21:08:09,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774433571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:08:09,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424236663] [2024-11-21 21:08:09,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:08:09,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:08:09,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:08:09,623 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:08:09,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 21:08:09,676 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-21 21:08:09,677 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:08:09,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 21:08:09,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:08:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:08:09,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:08:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:08:09,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424236663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:08:09,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:08:09,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-21 21:08:09,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991578701] [2024-11-21 21:08:09,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:08:09,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-21 21:08:09,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:08:09,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-21 21:08:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-21 21:08:09,787 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:09,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:08:09,865 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-11-21 21:08:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-21 21:08:09,865 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-21 21:08:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:08:09,866 INFO L225 Difference]: With dead ends: 45 [2024-11-21 21:08:09,866 INFO L226 Difference]: Without dead ends: 30 [2024-11-21 21:08:09,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-21 21:08:09,869 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:08:09,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 35 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:08:09,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-21 21:08:09,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-21 21:08:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-21 21:08:09,875 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2024-11-21 21:08:09,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:08:09,875 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-21 21:08:09,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:09,875 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-21 21:08:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-21 21:08:09,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:08:09,878 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:08:09,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 21:08:10,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:08:10,081 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:08:10,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:08:10,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1384678109, now seen corresponding path program 4 times [2024-11-21 21:08:10,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:08:10,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264093991] [2024-11-21 21:08:10,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 21:08:10,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:08:10,118 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 21:08:10,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:08:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 21:08:10,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:08:10,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264093991] [2024-11-21 21:08:10,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264093991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:08:10,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228476924] [2024-11-21 21:08:10,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 21:08:10,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:08:10,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:08:10,721 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:08:10,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 21:08:10,761 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 21:08:10,761 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:08:10,762 WARN L253 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-21 21:08:10,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:08:10,787 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 23 treesize of output 1 [2024-11-21 21:08:10,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 42 [2024-11-21 21:08:12,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-21 21:08:13,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2024-11-21 21:08:17,590 INFO L349 Elim1Store]: treesize reduction 35, result has 78.3 percent of original size [2024-11-21 21:08:17,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 113 treesize of output 178 [2024-11-21 21:08:17,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-21 21:08:18,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2024-11-21 21:08:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 21:08:18,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:08:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 21:08:18,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228476924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:08:18,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:08:18,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2024-11-21 21:08:18,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302242177] [2024-11-21 21:08:18,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:08:18,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-21 21:08:18,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:08:18,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-21 21:08:18,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1823, Unknown=1, NotChecked=0, Total=2070 [2024-11-21 21:08:18,949 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:08:23,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-21 21:08:28,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-21 21:08:35,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-21 21:09:01,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:09:01,968 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-11-21 21:09:01,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-21 21:09:01,969 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-21 21:09:01,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:09:01,969 INFO L225 Difference]: With dead ends: 35 [2024-11-21 21:09:01,969 INFO L226 Difference]: Without dead ends: 31 [2024-11-21 21:09:01,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=561, Invalid=3466, Unknown=5, NotChecked=0, Total=4032 [2024-11-21 21:09:01,971 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 52 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 38 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2024-11-21 21:09:01,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 82 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 395 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2024-11-21 21:09:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-21 21:09:01,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-21 21:09:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-11-21 21:09:01,979 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 26 [2024-11-21 21:09:01,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:09:01,979 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-11-21 21:09:01,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:01,980 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-11-21 21:09:01,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-21 21:09:01,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:09:01,980 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:09:01,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-21 21:09:02,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:09:02,182 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:09:02,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:09:02,182 INFO L85 PathProgramCache]: Analyzing trace with hash -483356095, now seen corresponding path program 5 times [2024-11-21 21:09:02,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:09:02,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299896484] [2024-11-21 21:09:02,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 21:09:02,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:09:02,201 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-21 21:09:02,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:09:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:02,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:09:02,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299896484] [2024-11-21 21:09:02,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299896484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:09:02,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643308562] [2024-11-21 21:09:02,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 21:09:02,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:09:02,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:09:02,292 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:09:02,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 21:09:02,362 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-21 21:09:02,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:09:02,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-21 21:09:02,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:09:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:02,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:09:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:02,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643308562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:09:02,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:09:02,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2024-11-21 21:09:02,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427749663] [2024-11-21 21:09:02,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:09:02,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-21 21:09:02,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:09:02,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-21 21:09:02,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-21 21:09:02,478 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:09:02,591 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-11-21 21:09:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-21 21:09:02,592 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-21 21:09:02,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:09:02,592 INFO L225 Difference]: With dead ends: 53 [2024-11-21 21:09:02,592 INFO L226 Difference]: Without dead ends: 35 [2024-11-21 21:09:02,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-21 21:09:02,593 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:09:02,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 38 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:09:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-21 21:09:02,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-11-21 21:09:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-11-21 21:09:02,603 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2024-11-21 21:09:02,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:09:02,603 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-11-21 21:09:02,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:02,604 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-11-21 21:09:02,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-21 21:09:02,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:09:02,604 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:09:02,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-21 21:09:02,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:09:02,805 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:09:02,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:09:02,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1023492733, now seen corresponding path program 6 times [2024-11-21 21:09:02,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:09:02,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239478986] [2024-11-21 21:09:02,805 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 21:09:02,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:09:02,833 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-21 21:09:02,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:09:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:03,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:09:03,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239478986] [2024-11-21 21:09:03,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239478986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:09:03,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856358022] [2024-11-21 21:09:03,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 21:09:03,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:09:03,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:09:03,689 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:09:03,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 21:09:03,744 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-21 21:09:03,744 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:09:03,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-21 21:09:03,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:09:03,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-21 21:09:03,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-21 21:09:03,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-21 21:09:03,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-21 21:09:03,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2024-11-21 21:09:04,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2024-11-21 21:09:04,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 27 [2024-11-21 21:09:04,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:09:04,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 20 [2024-11-21 21:09:04,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-21 21:09:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:04,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:09:05,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 266 [2024-11-21 21:09:05,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:09:05,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1158084 treesize of output 1059732 [2024-11-21 21:09:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:05,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856358022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:09:05,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:09:05,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 51 [2024-11-21 21:09:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496784852] [2024-11-21 21:09:05,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:09:05,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-21 21:09:05,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:09:05,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-21 21:09:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2252, Unknown=0, NotChecked=0, Total=2550 [2024-11-21 21:09:05,380 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 51 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 51 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:05,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:09:05,968 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2024-11-21 21:09:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-21 21:09:05,968 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 51 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-21 21:09:05,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:09:05,968 INFO L225 Difference]: With dead ends: 41 [2024-11-21 21:09:05,969 INFO L226 Difference]: Without dead ends: 37 [2024-11-21 21:09:05,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=503, Invalid=3279, Unknown=0, NotChecked=0, Total=3782 [2024-11-21 21:09:05,970 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 87 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:09:05,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 129 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 21:09:05,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-21 21:09:05,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-11-21 21:09:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2024-11-21 21:09:05,981 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2024-11-21 21:09:05,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:09:05,981 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2024-11-21 21:09:05,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 51 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2024-11-21 21:09:05,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-21 21:09:05,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:09:05,981 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:09:05,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 21:09:06,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:09:06,183 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:09:06,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:09:06,183 INFO L85 PathProgramCache]: Analyzing trace with hash 697103841, now seen corresponding path program 7 times [2024-11-21 21:09:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:09:06,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489339907] [2024-11-21 21:09:06,183 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 21:09:06,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:09:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:09:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:06,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:09:06,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489339907] [2024-11-21 21:09:06,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489339907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:09:06,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438974882] [2024-11-21 21:09:06,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 21:09:06,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:09:06,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:09:06,307 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:09:06,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 21:09:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:09:06,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-21 21:09:06,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:09:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:06,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:09:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:06,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438974882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:09:06,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:09:06,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-21 21:09:06,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180629344] [2024-11-21 21:09:06,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:09:06,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-21 21:09:06,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:09:06,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-21 21:09:06,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-21 21:09:06,549 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:09:06,687 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-11-21 21:09:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-21 21:09:06,687 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-21 21:09:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:09:06,688 INFO L225 Difference]: With dead ends: 61 [2024-11-21 21:09:06,688 INFO L226 Difference]: Without dead ends: 40 [2024-11-21 21:09:06,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 52 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-21 21:09:06,690 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 35 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:09:06,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 41 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:09:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-21 21:09:06,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2024-11-21 21:09:06,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:06,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-11-21 21:09:06,708 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2024-11-21 21:09:06,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:09:06,709 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-11-21 21:09:06,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:06,709 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-11-21 21:09:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-21 21:09:06,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:09:06,711 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:09:06,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-21 21:09:06,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:09:06,915 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:09:06,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:09:06,916 INFO L85 PathProgramCache]: Analyzing trace with hash -880704545, now seen corresponding path program 8 times [2024-11-21 21:09:06,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:09:06,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278193833] [2024-11-21 21:09:06,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:09:06,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:09:06,941 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:09:06,941 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:09:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:08,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:09:08,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278193833] [2024-11-21 21:09:08,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278193833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:09:08,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884754669] [2024-11-21 21:09:08,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:09:08,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:09:08,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:09:08,244 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:09:08,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 21:09:08,299 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:09:08,299 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:09:08,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-21 21:09:08,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:09:08,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-21 21:09:08,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-21 21:09:08,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-21 21:09:08,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-21 21:09:08,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-21 21:09:08,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2024-11-21 21:09:08,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2024-11-21 21:09:08,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 27 [2024-11-21 21:09:09,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 32 [2024-11-21 21:09:09,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:09:09,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 24 [2024-11-21 21:09:09,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-21 21:09:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:09,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:09:11,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 635 treesize of output 603 [2024-11-21 21:09:13,031 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:09:13,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32861547541 treesize of output 31452261269 [2024-11-21 21:09:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:17,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884754669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:09:17,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:09:17,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 22] total 63 [2024-11-21 21:09:17,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558307923] [2024-11-21 21:09:17,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:09:17,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-21 21:09:17,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:09:17,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-21 21:09:17,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=484, Invalid=3422, Unknown=0, NotChecked=0, Total=3906 [2024-11-21 21:09:17,513 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 63 states, 63 states have (on average 1.507936507936508) internal successors, (95), 63 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:20,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:09:20,441 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-11-21 21:09:20,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-21 21:09:20,442 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.507936507936508) internal successors, (95), 63 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-21 21:09:20,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:09:20,442 INFO L225 Difference]: With dead ends: 46 [2024-11-21 21:09:20,442 INFO L226 Difference]: Without dead ends: 42 [2024-11-21 21:09:20,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1012, Invalid=6128, Unknown=0, NotChecked=0, Total=7140 [2024-11-21 21:09:20,444 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 80 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:09:20,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 156 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-21 21:09:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-21 21:09:20,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-11-21 21:09:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-11-21 21:09:20,456 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-11-21 21:09:20,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:09:20,456 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-11-21 21:09:20,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.507936507936508) internal successors, (95), 63 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:20,456 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-11-21 21:09:20,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-21 21:09:20,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:09:20,456 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:09:20,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-21 21:09:20,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-21 21:09:20,657 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:09:20,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:09:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1812577787, now seen corresponding path program 9 times [2024-11-21 21:09:20,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:09:20,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253932612] [2024-11-21 21:09:20,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:09:20,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:09:20,699 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-21 21:09:20,699 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:09:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:20,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:09:20,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253932612] [2024-11-21 21:09:20,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253932612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:09:20,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017509229] [2024-11-21 21:09:20,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:09:20,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:09:20,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:09:20,904 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:09:20,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-21 21:09:21,008 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-21 21:09:21,008 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:09:21,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-21 21:09:21,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:09:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:21,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:09:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:09:21,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017509229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:09:21,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:09:21,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-21 21:09:21,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045470642] [2024-11-21 21:09:21,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:09:21,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-21 21:09:21,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:09:21,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-21 21:09:21,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-21 21:09:21,411 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:09:21,607 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-11-21 21:09:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-21 21:09:21,608 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-21 21:09:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:09:21,608 INFO L225 Difference]: With dead ends: 69 [2024-11-21 21:09:21,608 INFO L226 Difference]: Without dead ends: 45 [2024-11-21 21:09:21,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-21 21:09:21,609 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 39 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:09:21,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 35 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:09:21,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-21 21:09:21,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-11-21 21:09:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:21,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-11-21 21:09:21,622 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 39 [2024-11-21 21:09:21,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:09:21,622 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-11-21 21:09:21,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:09:21,623 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-11-21 21:09:21,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-21 21:09:21,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:09:21,623 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:09:21,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-21 21:09:21,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:09:21,824 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:09:21,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:09:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1463861959, now seen corresponding path program 10 times [2024-11-21 21:09:21,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:09:21,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148730849] [2024-11-21 21:09:21,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 21:09:21,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:09:21,844 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 21:09:21,844 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:09:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 71 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 21:09:23,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:09:23,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148730849] [2024-11-21 21:09:23,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148730849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:09:23,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164080710] [2024-11-21 21:09:23,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 21:09:23,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:09:23,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:09:23,531 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:09:23,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-21 21:09:23,584 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 21:09:23,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:09:23,585 WARN L253 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-21 21:09:23,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:09:23,597 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 23 treesize of output 1 [2024-11-21 21:09:23,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 42 [2024-11-21 21:09:23,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 83 [2024-11-21 21:09:24,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 118 [2024-11-21 21:09:24,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 206 treesize of output 159