./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s1lif.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/s1lif.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 cdcd45f06ced2bb4437693c85186d4d1862b19794596dce357397727796a8cdf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:55:57,900 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:55:57,985 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:55:57,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:55:57,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:55:58,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:55:58,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:55:58,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:55:58,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:55:58,024 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:55:58,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:55:58,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:55:58,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:55:58,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:55:58,027 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:55:58,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:55:58,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:55:58,030 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:55:58,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:55:58,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:55:58,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:55:58,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:55:58,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:55:58,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:55:58,035 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:55:58,035 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:55:58,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:55:58,035 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:55:58,036 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:55:58,036 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:55:58,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:55:58,036 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:55:58,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:55:58,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:55:58,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:55:58,037 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:55:58,037 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:55:58,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:55:58,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:55:58,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:55:58,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:55:58,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:55:58,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdcd45f06ced2bb4437693c85186d4d1862b19794596dce357397727796a8cdf [2024-11-16 02:55:58,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:55:58,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:55:58,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:55:58,306 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:55:58,306 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:55:58,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s1lif.c [2024-11-16 02:55:59,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:55:59,897 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:55:59,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s1lif.c [2024-11-16 02:55:59,908 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3349506d9/e5b8db9148c4464fa70a08523c5f88bf/FLAG37e5298f1 [2024-11-16 02:56:00,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3349506d9/e5b8db9148c4464fa70a08523c5f88bf [2024-11-16 02:56:00,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:56:00,288 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:56:00,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:56:00,290 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:56:00,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:56:00,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64711974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00, skipping insertion in model container [2024-11-16 02:56:00,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,317 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:56:00,490 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/s1lif.c[588,601] [2024-11-16 02:56:00,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:56:00,530 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:56:00,546 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/s1lif.c[588,601] [2024-11-16 02:56:00,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:56:00,577 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:56:00,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00 WrapperNode [2024-11-16 02:56:00,578 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:56:00,579 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:56:00,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:56:00,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:56:00,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,620 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2024-11-16 02:56:00,623 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:56:00,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:56:00,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:56:00,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:56:00,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,637 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,650 INFO L175 MemorySlicer]: Split 21 memory accesses to 4 slices as follows [2, 8, 4, 7]. 38 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 5 writes are split as follows [0, 0, 2, 3]. [2024-11-16 02:56:00,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,656 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,657 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,661 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:56:00,661 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:56:00,662 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:56:00,662 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:56:00,662 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (1/1) ... [2024-11-16 02:56:00,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:56:00,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:00,693 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) [2024-11-16 02:56:00,697 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 [2024-11-16 02:56:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 02:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:56:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:56:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:56:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 02:56:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 02:56:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:56:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:56:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:56:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:56:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:56:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 02:56:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:56:00,821 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:56:00,823 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:56:00,946 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#sum~0#1.base, main_~#sum~0#1.offset);havoc main_~#sum~0#1.base, main_~#sum~0#1.offset; [2024-11-16 02:56:00,952 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-16 02:56:00,952 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:56:00,963 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:56:00,963 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:56:00,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:56:00 BoogieIcfgContainer [2024-11-16 02:56:00,963 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:56:00,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:56:00,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:56:00,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:56:00,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:56:00" (1/3) ... [2024-11-16 02:56:00,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464aa6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:56:00, skipping insertion in model container [2024-11-16 02:56:00,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:56:00" (2/3) ... [2024-11-16 02:56:00,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464aa6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:56:00, skipping insertion in model container [2024-11-16 02:56:00,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:56:00" (3/3) ... [2024-11-16 02:56:00,977 INFO L112 eAbstractionObserver]: Analyzing ICFG s1lif.c [2024-11-16 02:56:00,995 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:56:00,995 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:56:01,061 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:56:01,069 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;@27d605cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:56:01,069 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:56:01,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 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) [2024-11-16 02:56:01,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 02:56:01,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:01,078 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:01,078 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:01,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:01,082 INFO L85 PathProgramCache]: Analyzing trace with hash 49340500, now seen corresponding path program 1 times [2024-11-16 02:56:01,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:01,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612008807] [2024-11-16 02:56:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:01,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:01,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:01,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612008807] [2024-11-16 02:56:01,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612008807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:56:01,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:56:01,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:56:01,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309317687] [2024-11-16 02:56:01,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:56:01,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:56:01,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:01,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:56:01,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:56:01,296 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2024-11-16 02:56:01,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:01,308 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2024-11-16 02:56:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:56:01,311 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2024-11-16 02:56:01,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:01,317 INFO L225 Difference]: With dead ends: 45 [2024-11-16 02:56:01,317 INFO L226 Difference]: Without dead ends: 20 [2024-11-16 02:56:01,319 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 [2024-11-16 02:56:01,323 INFO L432 NwaCegarLoop]: 28 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, 28 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 [2024-11-16 02:56:01,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:56:01,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-16 02:56:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-16 02:56:01,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2024-11-16 02:56:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-16 02:56:01,352 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2024-11-16 02:56:01,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:01,353 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-16 02:56:01,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2024-11-16 02:56:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-16 02:56:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-16 02:56:01,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:01,354 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:01,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:56:01,354 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:01,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash -986136489, now seen corresponding path program 1 times [2024-11-16 02:56:01,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:01,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611068144] [2024-11-16 02:56:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:01,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:01,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:01,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611068144] [2024-11-16 02:56:01,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611068144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:56:01,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:56:01,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:56:01,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748539391] [2024-11-16 02:56:01,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:56:01,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:56:01,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:01,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:56:01,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:56:01,548 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2024-11-16 02:56:01,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:01,614 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-11-16 02:56:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:56:01,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) Word has length 17 [2024-11-16 02:56:01,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:01,617 INFO L225 Difference]: With dead ends: 41 [2024-11-16 02:56:01,617 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 02:56:01,618 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 [2024-11-16 02:56:01,620 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:01,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 19 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:01,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 02:56:01,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-11-16 02:56:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 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) [2024-11-16 02:56:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-16 02:56:01,630 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2024-11-16 02:56:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:01,630 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-16 02:56:01,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2024-11-16 02:56:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-16 02:56:01,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-16 02:56:01,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:01,632 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:01,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:56:01,632 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:01,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash 179359543, now seen corresponding path program 1 times [2024-11-16 02:56:01,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:01,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432597071] [2024-11-16 02:56:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:01,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:02,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:02,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432597071] [2024-11-16 02:56:02,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432597071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:02,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455198580] [2024-11-16 02:56:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:02,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:02,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:02,644 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) [2024-11-16 02:56:02,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:56:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:02,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 02:56:02,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:02,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:03,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:03,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:03,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:03,293 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 35 treesize of output 31 [2024-11-16 02:56:03,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:03,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2024-11-16 02:56:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:03,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455198580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:03,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:03,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 25 [2024-11-16 02:56:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155256814] [2024-11-16 02:56:03,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:03,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:56:03,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:03,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:56:03,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:56:03,461 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 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) [2024-11-16 02:56:03,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:03,908 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-16 02:56:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 02:56:03,908 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 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 25 [2024-11-16 02:56:03,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:03,910 INFO L225 Difference]: With dead ends: 58 [2024-11-16 02:56:03,911 INFO L226 Difference]: Without dead ends: 53 [2024-11-16 02:56:03,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=865, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 02:56:03,912 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 67 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:03,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 139 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:56:03,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-16 02:56:03,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 38. [2024-11-16 02:56:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:03,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2024-11-16 02:56:03,922 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 25 [2024-11-16 02:56:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:03,923 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2024-11-16 02:56:03,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 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) [2024-11-16 02:56:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2024-11-16 02:56:03,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-16 02:56:03,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:03,924 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:03,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:56:04,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:04,125 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:04,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:04,126 INFO L85 PathProgramCache]: Analyzing trace with hash -114043464, now seen corresponding path program 1 times [2024-11-16 02:56:04,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:04,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548732205] [2024-11-16 02:56:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:04,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:04,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:04,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548732205] [2024-11-16 02:56:04,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548732205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:04,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540648063] [2024-11-16 02:56:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:04,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:04,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:04,349 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) [2024-11-16 02:56:04,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:56:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:04,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 02:56:04,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:04,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:04,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:04,483 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 14 treesize of output 12 [2024-11-16 02:56:04,485 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 14 treesize of output 12 [2024-11-16 02:56:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:04,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540648063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:04,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:04,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 02:56:04,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366873946] [2024-11-16 02:56:04,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:04,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 02:56:04,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:04,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 02:56:04,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-16 02:56:04,499 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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) [2024-11-16 02:56:04,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:04,570 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-16 02:56:04,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 02:56:04,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-16 02:56:04,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:04,571 INFO L225 Difference]: With dead ends: 58 [2024-11-16 02:56:04,571 INFO L226 Difference]: Without dead ends: 44 [2024-11-16 02:56:04,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:56:04,572 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:04,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 104 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:04,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-16 02:56:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2024-11-16 02:56:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-11-16 02:56:04,585 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 25 [2024-11-16 02:56:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:04,585 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-11-16 02:56:04,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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) [2024-11-16 02:56:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-11-16 02:56:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 02:56:04,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:04,586 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:04,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:56:04,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 02:56:04,787 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:04,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:04,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1807199594, now seen corresponding path program 2 times [2024-11-16 02:56:04,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:04,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125109538] [2024-11-16 02:56:04,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:04,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:04,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:04,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125109538] [2024-11-16 02:56:04,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125109538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:04,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568194266] [2024-11-16 02:56:04,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:56:04,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:04,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:04,871 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) [2024-11-16 02:56:04,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:56:04,944 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:56:04,945 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:04,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:56:04,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:05,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:05,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568194266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:05,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:05,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 02:56:05,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055059308] [2024-11-16 02:56:05,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:05,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 02:56:05,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:05,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 02:56:05,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:56:05,070 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 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) [2024-11-16 02:56:05,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:05,164 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2024-11-16 02:56:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 02:56:05,165 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 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 27 [2024-11-16 02:56:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:05,166 INFO L225 Difference]: With dead ends: 79 [2024-11-16 02:56:05,166 INFO L226 Difference]: Without dead ends: 46 [2024-11-16 02:56:05,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-16 02:56:05,167 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:05,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 66 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:05,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-16 02:56:05,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2024-11-16 02:56:05,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 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) [2024-11-16 02:56:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-16 02:56:05,178 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 27 [2024-11-16 02:56:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:05,178 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-16 02:56:05,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 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) [2024-11-16 02:56:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-16 02:56:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 02:56:05,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:05,180 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:05,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:56:05,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:05,381 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:05,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1337522186, now seen corresponding path program 3 times [2024-11-16 02:56:05,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:05,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186596440] [2024-11-16 02:56:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:56:05,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:05,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186596440] [2024-11-16 02:56:05,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186596440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:05,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575470230] [2024-11-16 02:56:05,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:56:05,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:05,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:05,482 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) [2024-11-16 02:56:05,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:56:05,547 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 02:56:05,548 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:05,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-16 02:56:05,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:05,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:05,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:05,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:56:05,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:06,041 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 35 treesize of output 31 [2024-11-16 02:56:06,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:06,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2024-11-16 02:56:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:56:06,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575470230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:06,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:06,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 25 [2024-11-16 02:56:06,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986538863] [2024-11-16 02:56:06,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:06,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:56:06,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:56:06,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:56:06,145 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 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) [2024-11-16 02:56:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:06,482 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2024-11-16 02:56:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 02:56:06,483 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 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 27 [2024-11-16 02:56:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:06,483 INFO L225 Difference]: With dead ends: 46 [2024-11-16 02:56:06,483 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 02:56:06,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 02:56:06,485 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 73 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:06,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 154 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:56:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 02:56:06,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-16 02:56:06,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 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) [2024-11-16 02:56:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2024-11-16 02:56:06,490 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 27 [2024-11-16 02:56:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:06,490 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2024-11-16 02:56:06,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 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) [2024-11-16 02:56:06,490 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2024-11-16 02:56:06,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 02:56:06,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:06,491 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:06,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:06,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:06,692 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:06,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:06,693 INFO L85 PathProgramCache]: Analyzing trace with hash -103385577, now seen corresponding path program 4 times [2024-11-16 02:56:06,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:06,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879366941] [2024-11-16 02:56:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:06,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:07,783 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:07,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:07,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879366941] [2024-11-16 02:56:07,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879366941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:07,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996477522] [2024-11-16 02:56:07,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:56:07,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:07,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:07,786 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) [2024-11-16 02:56:07,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:56:07,848 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:56:07,848 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:07,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-16 02:56:07,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:07,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:08,072 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 19 treesize of output 11 [2024-11-16 02:56:08,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:08,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-16 02:56:08,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:08,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:08,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:08,839 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 78 treesize of output 70 [2024-11-16 02:56:08,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:08,863 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 394 treesize of output 391 [2024-11-16 02:56:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996477522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:09,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:09,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 44 [2024-11-16 02:56:09,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069211133] [2024-11-16 02:56:09,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:09,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 02:56:09,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:09,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 02:56:09,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1626, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 02:56:09,200 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 44 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 44 states have internal predecessors, (83), 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) [2024-11-16 02:56:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:10,621 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2024-11-16 02:56:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-16 02:56:10,622 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 44 states have internal predecessors, (83), 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 33 [2024-11-16 02:56:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:10,623 INFO L225 Difference]: With dead ends: 102 [2024-11-16 02:56:10,624 INFO L226 Difference]: Without dead ends: 84 [2024-11-16 02:56:10,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=712, Invalid=3578, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 02:56:10,627 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 139 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:10,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 306 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:56:10,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-16 02:56:10,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 59. [2024-11-16 02:56:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 58 states have internal predecessors, (69), 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) [2024-11-16 02:56:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2024-11-16 02:56:10,636 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 33 [2024-11-16 02:56:10,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:10,637 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2024-11-16 02:56:10,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 44 states have internal predecessors, (83), 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) [2024-11-16 02:56:10,637 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2024-11-16 02:56:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 02:56:10,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:10,638 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:10,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:10,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:10,839 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:10,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:10,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1404166232, now seen corresponding path program 1 times [2024-11-16 02:56:10,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:10,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310393718] [2024-11-16 02:56:10,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:10,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:56:11,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:11,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310393718] [2024-11-16 02:56:11,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310393718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:11,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538874931] [2024-11-16 02:56:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:11,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:11,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:11,106 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) [2024-11-16 02:56:11,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:56:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:11,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 02:56:11,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:11,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:11,221 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 [2024-11-16 02:56:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:56:11,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:11,298 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 16 treesize of output 14 [2024-11-16 02:56:11,300 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 16 treesize of output 12 [2024-11-16 02:56:11,322 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:56:11,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538874931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:11,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:11,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-16 02:56:11,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027882133] [2024-11-16 02:56:11,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:11,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 02:56:11,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:11,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 02:56:11,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-16 02:56:11,324 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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) [2024-11-16 02:56:11,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:11,391 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2024-11-16 02:56:11,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 02:56:11,392 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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 33 [2024-11-16 02:56:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:11,393 INFO L225 Difference]: With dead ends: 97 [2024-11-16 02:56:11,393 INFO L226 Difference]: Without dead ends: 66 [2024-11-16 02:56:11,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-16 02:56:11,394 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:11,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 123 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:11,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-16 02:56:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2024-11-16 02:56:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 59 states have internal predecessors, (69), 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) [2024-11-16 02:56:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2024-11-16 02:56:11,402 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 33 [2024-11-16 02:56:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:11,403 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2024-11-16 02:56:11,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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) [2024-11-16 02:56:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2024-11-16 02:56:11,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-16 02:56:11,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:11,404 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:11,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:56:11,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:11,609 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:11,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:11,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1352647030, now seen corresponding path program 5 times [2024-11-16 02:56:11,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:11,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810746832] [2024-11-16 02:56:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:11,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:56:11,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:11,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810746832] [2024-11-16 02:56:11,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810746832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:11,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717732200] [2024-11-16 02:56:11,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:56:11,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:11,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:11,722 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) [2024-11-16 02:56:11,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:56:11,797 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-16 02:56:11,797 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:11,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:56:11,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:56:11,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:56:11,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717732200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:11,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:11,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:56:11,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567378678] [2024-11-16 02:56:11,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:11,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:56:11,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:11,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:56:11,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:56:11,915 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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) [2024-11-16 02:56:12,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:12,016 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2024-11-16 02:56:12,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 02:56:12,016 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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) Word has length 35 [2024-11-16 02:56:12,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:12,017 INFO L225 Difference]: With dead ends: 101 [2024-11-16 02:56:12,017 INFO L226 Difference]: Without dead ends: 56 [2024-11-16 02:56:12,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-16 02:56:12,018 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:12,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 73 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:12,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-16 02:56:12,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2024-11-16 02:56:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-11-16 02:56:12,026 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 35 [2024-11-16 02:56:12,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:12,026 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-11-16 02:56:12,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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) [2024-11-16 02:56:12,027 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-11-16 02:56:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-16 02:56:12,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:12,028 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:12,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:12,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:12,229 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:12,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:12,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1086554070, now seen corresponding path program 6 times [2024-11-16 02:56:12,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:12,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131771839] [2024-11-16 02:56:12,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:12,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:12,333 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:56:12,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:12,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131771839] [2024-11-16 02:56:12,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131771839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:12,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657852989] [2024-11-16 02:56:12,334 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:56:12,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:12,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:12,336 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) [2024-11-16 02:56:12,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:56:12,417 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-16 02:56:12,418 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:12,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:56:12,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:56:12,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:56:12,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657852989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:12,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:12,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:56:12,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072672182] [2024-11-16 02:56:12,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:12,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:56:12,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:12,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:56:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:56:12,556 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:12,677 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2024-11-16 02:56:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 02:56:12,678 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-16 02:56:12,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:12,679 INFO L225 Difference]: With dead ends: 56 [2024-11-16 02:56:12,679 INFO L226 Difference]: Without dead ends: 44 [2024-11-16 02:56:12,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:56:12,680 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:12,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 99 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:12,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-16 02:56:12,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-16 02:56:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 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) [2024-11-16 02:56:12,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2024-11-16 02:56:12,687 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 35 [2024-11-16 02:56:12,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:12,688 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2024-11-16 02:56:12,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2024-11-16 02:56:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 02:56:12,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:12,689 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:12,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:12,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 02:56:12,892 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:12,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:12,893 INFO L85 PathProgramCache]: Analyzing trace with hash -538512137, now seen corresponding path program 7 times [2024-11-16 02:56:12,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:12,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328429223] [2024-11-16 02:56:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:12,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:14,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:14,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328429223] [2024-11-16 02:56:14,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328429223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:14,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317139609] [2024-11-16 02:56:14,132 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:56:14,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:14,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:14,134 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) [2024-11-16 02:56:14,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 02:56:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:14,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-16 02:56:14,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:14,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:14,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:14,578 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:14,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-16 02:56:14,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:14,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-16 02:56:14,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:14,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:15,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:15,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:15,619 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 137 treesize of output 125 [2024-11-16 02:56:15,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:15,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12917 treesize of output 12335 [2024-11-16 02:56:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:16,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317139609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:16,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:16,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 56 [2024-11-16 02:56:16,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054343440] [2024-11-16 02:56:16,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:16,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-16 02:56:16,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:16,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-16 02:56:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=2708, Unknown=0, NotChecked=0, Total=3080 [2024-11-16 02:56:16,083 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 56 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 56 states have internal predecessors, (108), 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) [2024-11-16 02:56:16,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:16,801 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2024-11-16 02:56:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 02:56:16,802 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 56 states have internal predecessors, (108), 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 41 [2024-11-16 02:56:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:16,802 INFO L225 Difference]: With dead ends: 94 [2024-11-16 02:56:16,802 INFO L226 Difference]: Without dead ends: 76 [2024-11-16 02:56:16,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=481, Invalid=3301, Unknown=0, NotChecked=0, Total=3782 [2024-11-16 02:56:16,804 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 91 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:16,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 446 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:56:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-16 02:56:16,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 56. [2024-11-16 02:56:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 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) [2024-11-16 02:56:16,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2024-11-16 02:56:16,813 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 41 [2024-11-16 02:56:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:16,813 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2024-11-16 02:56:16,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 56 states have internal predecessors, (108), 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) [2024-11-16 02:56:16,814 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2024-11-16 02:56:16,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 02:56:16,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:16,814 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:16,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:17,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:17,018 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:17,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:17,018 INFO L85 PathProgramCache]: Analyzing trace with hash 814797560, now seen corresponding path program 2 times [2024-11-16 02:56:17,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:17,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995389943] [2024-11-16 02:56:17,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:17,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:17,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:17,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995389943] [2024-11-16 02:56:17,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995389943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:17,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736810151] [2024-11-16 02:56:17,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:56:17,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:17,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:17,336 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) [2024-11-16 02:56:17,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 02:56:17,418 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:56:17,418 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:17,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 02:56:17,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:17,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:17,528 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 [2024-11-16 02:56:17,565 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 [2024-11-16 02:56:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:17,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:17,634 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 16 treesize of output 14 [2024-11-16 02:56:17,636 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 16 treesize of output 12 [2024-11-16 02:56:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:17,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736810151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:17,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:17,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-16 02:56:17,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261878865] [2024-11-16 02:56:17,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:17,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 02:56:17,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:17,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 02:56:17,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:56:17,646 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 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) [2024-11-16 02:56:17,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:17,787 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2024-11-16 02:56:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:56:17,788 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 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 41 [2024-11-16 02:56:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:17,788 INFO L225 Difference]: With dead ends: 81 [2024-11-16 02:56:17,789 INFO L226 Difference]: Without dead ends: 63 [2024-11-16 02:56:17,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-16 02:56:17,789 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:17,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 219 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:17,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-16 02:56:17,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-11-16 02:56:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 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) [2024-11-16 02:56:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2024-11-16 02:56:17,798 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 41 [2024-11-16 02:56:17,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:17,799 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2024-11-16 02:56:17,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 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) [2024-11-16 02:56:17,799 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2024-11-16 02:56:17,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 02:56:17,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:17,803 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:17,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 02:56:18,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 02:56:18,004 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:18,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:18,005 INFO L85 PathProgramCache]: Analyzing trace with hash -255209546, now seen corresponding path program 8 times [2024-11-16 02:56:18,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:18,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481390930] [2024-11-16 02:56:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:18,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:18,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:18,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481390930] [2024-11-16 02:56:18,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481390930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:18,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094788587] [2024-11-16 02:56:18,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:56:18,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:18,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:18,135 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:18,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 02:56:18,224 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:56:18,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:18,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 02:56:18,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:18,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:18,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094788587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:18,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:18,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-16 02:56:18,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169485205] [2024-11-16 02:56:18,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:18,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:56:18,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:18,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:56:18,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:56:18,403 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 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) [2024-11-16 02:56:18,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:18,613 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2024-11-16 02:56:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:56:18,614 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 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 43 [2024-11-16 02:56:18,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:18,615 INFO L225 Difference]: With dead ends: 85 [2024-11-16 02:56:18,615 INFO L226 Difference]: Without dead ends: 71 [2024-11-16 02:56:18,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:56:18,616 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:18,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 148 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:18,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-16 02:56:18,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-11-16 02:56:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 65 states have internal predecessors, (71), 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) [2024-11-16 02:56:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2024-11-16 02:56:18,625 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 43 [2024-11-16 02:56:18,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:18,625 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2024-11-16 02:56:18,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 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) [2024-11-16 02:56:18,625 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2024-11-16 02:56:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 02:56:18,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:18,626 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:18,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 02:56:18,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 02:56:18,831 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:18,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:18,831 INFO L85 PathProgramCache]: Analyzing trace with hash -181641703, now seen corresponding path program 3 times [2024-11-16 02:56:18,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:18,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571850593] [2024-11-16 02:56:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:56:18,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571850593] [2024-11-16 02:56:18,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571850593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830295969] [2024-11-16 02:56:18,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:56:18,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:18,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:18,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:18,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 02:56:19,100 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 02:56:19,100 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:19,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 02:56:19,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:56:19,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:56:19,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830295969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:19,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:19,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-16 02:56:19,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704979671] [2024-11-16 02:56:19,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:19,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:56:19,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:19,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:56:19,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:56:19,268 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 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) [2024-11-16 02:56:19,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:19,368 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2024-11-16 02:56:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 02:56:19,368 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 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 47 [2024-11-16 02:56:19,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:19,369 INFO L225 Difference]: With dead ends: 91 [2024-11-16 02:56:19,369 INFO L226 Difference]: Without dead ends: 52 [2024-11-16 02:56:19,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:56:19,369 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 45 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:19,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 77 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:19,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-16 02:56:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-11-16 02:56:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 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) [2024-11-16 02:56:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2024-11-16 02:56:19,381 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 47 [2024-11-16 02:56:19,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:19,381 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2024-11-16 02:56:19,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 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) [2024-11-16 02:56:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2024-11-16 02:56:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 02:56:19,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:19,384 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:19,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:19,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 02:56:19,584 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:19,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:19,585 INFO L85 PathProgramCache]: Analyzing trace with hash 220171223, now seen corresponding path program 9 times [2024-11-16 02:56:19,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:19,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281227661] [2024-11-16 02:56:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:19,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:21,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:21,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281227661] [2024-11-16 02:56:21,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281227661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:21,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772629754] [2024-11-16 02:56:21,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:56:21,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:21,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:21,434 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:21,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 02:56:21,542 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 02:56:21,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:21,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-16 02:56:21,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:21,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:21,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:21,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:21,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-16 02:56:22,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:22,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-16 02:56:22,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:22,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 41 [2024-11-16 02:56:22,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:22,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:22,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-16 02:56:22,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:22,953 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:22,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 95 [2024-11-16 02:56:22,963 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 124 treesize of output 81 [2024-11-16 02:56:23,179 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:23,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:24,552 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 137 treesize of output 125 [2024-11-16 02:56:24,614 INFO L349 Elim1Store]: treesize reduction 30, result has 68.4 percent of original size [2024-11-16 02:56:24,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5537 treesize of output 5478 [2024-11-16 02:56:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:25,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772629754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:25,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:25,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 78 [2024-11-16 02:56:25,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914243234] [2024-11-16 02:56:25,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:25,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-16 02:56:25,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-16 02:56:25,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=5255, Unknown=0, NotChecked=0, Total=6006 [2024-11-16 02:56:25,412 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 78 states, 78 states have (on average 1.705128205128205) internal successors, (133), 78 states have internal predecessors, (133), 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) [2024-11-16 02:56:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:27,980 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2024-11-16 02:56:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-16 02:56:27,980 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.705128205128205) internal successors, (133), 78 states have internal predecessors, (133), 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 49 [2024-11-16 02:56:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:27,981 INFO L225 Difference]: With dead ends: 126 [2024-11-16 02:56:27,981 INFO L226 Difference]: Without dead ends: 90 [2024-11-16 02:56:27,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3169 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1611, Invalid=10161, Unknown=0, NotChecked=0, Total=11772 [2024-11-16 02:56:27,985 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 225 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:27,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 630 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 02:56:27,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-16 02:56:27,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2024-11-16 02:56:27,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 74 states have internal predecessors, (81), 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) [2024-11-16 02:56:27,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2024-11-16 02:56:27,995 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 49 [2024-11-16 02:56:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:27,995 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2024-11-16 02:56:27,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.705128205128205) internal successors, (133), 78 states have internal predecessors, (133), 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) [2024-11-16 02:56:27,996 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2024-11-16 02:56:27,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 02:56:27,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:27,997 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:28,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 02:56:28,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 02:56:28,197 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:28,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:28,198 INFO L85 PathProgramCache]: Analyzing trace with hash -624300648, now seen corresponding path program 4 times [2024-11-16 02:56:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:28,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273057534] [2024-11-16 02:56:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:28,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:56:28,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:28,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273057534] [2024-11-16 02:56:28,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273057534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:28,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519004082] [2024-11-16 02:56:28,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:56:28,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:28,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:28,711 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:28,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 02:56:28,798 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:56:28,799 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:28,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-16 02:56:28,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:28,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-16 02:56:28,958 INFO L349 Elim1Store]: treesize reduction 22, result has 42.1 percent of original size [2024-11-16 02:56:28,958 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 1 case distinctions, treesize of input 28 treesize of output 20 [2024-11-16 02:56:29,028 INFO L349 Elim1Store]: treesize reduction 24, result has 40.0 percent of original size [2024-11-16 02:56:29,028 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 1 case distinctions, treesize of input 36 treesize of output 24 [2024-11-16 02:56:29,116 INFO L349 Elim1Store]: treesize reduction 24, result has 40.0 percent of original size [2024-11-16 02:56:29,117 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 1 case distinctions, treesize of input 39 treesize of output 27 [2024-11-16 02:56:29,244 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-16 02:56:29,244 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 23 treesize of output 12 [2024-11-16 02:56:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:56:29,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:56:29,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519004082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:29,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:29,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 35 [2024-11-16 02:56:29,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526533223] [2024-11-16 02:56:29,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:29,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 02:56:29,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:29,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 02:56:29,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=980, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 02:56:29,660 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 35 states have internal predecessors, (89), 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) [2024-11-16 02:56:30,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:30,648 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2024-11-16 02:56:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-16 02:56:30,649 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 35 states have internal predecessors, (89), 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 49 [2024-11-16 02:56:30,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:30,650 INFO L225 Difference]: With dead ends: 114 [2024-11-16 02:56:30,650 INFO L226 Difference]: Without dead ends: 74 [2024-11-16 02:56:30,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=584, Invalid=2608, Unknown=0, NotChecked=0, Total=3192 [2024-11-16 02:56:30,652 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 34 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:30,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 240 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:56:30,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-16 02:56:30,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-16 02:56:30,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 73 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:30,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2024-11-16 02:56:30,663 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 49 [2024-11-16 02:56:30,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:30,664 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2024-11-16 02:56:30,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 35 states have internal predecessors, (89), 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) [2024-11-16 02:56:30,664 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2024-11-16 02:56:30,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-16 02:56:30,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:30,665 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:30,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:30,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:30,865 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:30,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:30,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1357089688, now seen corresponding path program 10 times [2024-11-16 02:56:30,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:30,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413944482] [2024-11-16 02:56:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:56:31,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:31,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413944482] [2024-11-16 02:56:31,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413944482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:31,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205022966] [2024-11-16 02:56:31,022 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:56:31,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:31,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:31,024 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:31,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 02:56:31,121 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:56:31,121 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:31,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:56:31,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:56:31,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:56:31,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205022966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:31,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:31,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-16 02:56:31,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749354328] [2024-11-16 02:56:31,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:31,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 02:56:31,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:31,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 02:56:31,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:56:31,351 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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) [2024-11-16 02:56:31,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:31,499 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2024-11-16 02:56:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 02:56:31,499 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-16 02:56:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:31,499 INFO L225 Difference]: With dead ends: 81 [2024-11-16 02:56:31,500 INFO L226 Difference]: Without dead ends: 76 [2024-11-16 02:56:31,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 94 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2024-11-16 02:56:31,500 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 60 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:31,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 170 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:31,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-16 02:56:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-16 02:56:31,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.12) internal successors, (84), 75 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2024-11-16 02:56:31,512 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 55 [2024-11-16 02:56:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:31,512 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2024-11-16 02:56:31,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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) [2024-11-16 02:56:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2024-11-16 02:56:31,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 02:56:31,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:31,513 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:31,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-16 02:56:31,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 02:56:31,713 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:31,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:31,714 INFO L85 PathProgramCache]: Analyzing trace with hash 415070903, now seen corresponding path program 11 times [2024-11-16 02:56:31,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:31,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954245325] [2024-11-16 02:56:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:31,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:34,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954245325] [2024-11-16 02:56:34,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954245325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:34,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829269705] [2024-11-16 02:56:34,346 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:56:34,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:34,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:34,348 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:34,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 02:56:34,574 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-16 02:56:34,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:34,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-16 02:56:34,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:34,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:34,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:35,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:35,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2024-11-16 02:56:35,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:35,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 35 [2024-11-16 02:56:35,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:35,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 47 [2024-11-16 02:56:35,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:35,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 59 [2024-11-16 02:56:35,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:36,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:36,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:36,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:36,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:56:36,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:38,309 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 303 treesize of output 283 [2024-11-16 02:56:38,693 INFO L349 Elim1Store]: treesize reduction 60, result has 77.2 percent of original size [2024-11-16 02:56:38,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 728768555 treesize of output 709894355 [2024-11-16 02:56:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:56:42,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829269705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:42,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:42,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 29, 27] total 83 [2024-11-16 02:56:42,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479768408] [2024-11-16 02:56:42,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:42,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-16 02:56:42,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:42,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-16 02:56:42,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=6290, Unknown=0, NotChecked=0, Total=6806 [2024-11-16 02:56:42,028 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 83 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 83 states have internal predecessors, (139), 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) [2024-11-16 02:56:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:51,080 INFO L93 Difference]: Finished difference Result 197 states and 227 transitions. [2024-11-16 02:56:51,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-16 02:56:51,081 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 83 states have internal predecessors, (139), 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 57 [2024-11-16 02:56:51,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:51,082 INFO L225 Difference]: With dead ends: 197 [2024-11-16 02:56:51,082 INFO L226 Difference]: Without dead ends: 191 [2024-11-16 02:56:51,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5910 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=2345, Invalid=20005, Unknown=0, NotChecked=0, Total=22350 [2024-11-16 02:56:51,085 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 379 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:51,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 888 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 02:56:51,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-16 02:56:51,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 146. [2024-11-16 02:56:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.193103448275862) internal successors, (173), 145 states have internal predecessors, (173), 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) [2024-11-16 02:56:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2024-11-16 02:56:51,110 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 57 [2024-11-16 02:56:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:51,110 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2024-11-16 02:56:51,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 83 states have internal predecessors, (139), 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) [2024-11-16 02:56:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2024-11-16 02:56:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-16 02:56:51,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:51,111 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:51,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-16 02:56:51,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 02:56:51,312 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:51,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:51,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1373117974, now seen corresponding path program 12 times [2024-11-16 02:56:51,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:51,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413453911] [2024-11-16 02:56:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:51,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:51,503 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 32 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:56:51,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:51,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413453911] [2024-11-16 02:56:51,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413453911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:51,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911553417] [2024-11-16 02:56:51,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:56:51,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:51,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:51,506 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:51,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 02:56:51,739 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-16 02:56:51,739 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:51,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 02:56:51,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:56:51,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 42 proven. 48 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:56:52,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911553417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:52,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:52,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 27 [2024-11-16 02:56:52,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13953231] [2024-11-16 02:56:52,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:52,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 02:56:52,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:52,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 02:56:52,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:56:52,063 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 27 states have internal predecessors, (71), 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) [2024-11-16 02:56:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:52,270 INFO L93 Difference]: Finished difference Result 184 states and 211 transitions. [2024-11-16 02:56:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 02:56:52,270 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 27 states have internal predecessors, (71), 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 59 [2024-11-16 02:56:52,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:52,271 INFO L225 Difference]: With dead ends: 184 [2024-11-16 02:56:52,271 INFO L226 Difference]: Without dead ends: 85 [2024-11-16 02:56:52,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 94 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=355, Invalid=977, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 02:56:52,272 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 151 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:52,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 136 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:52,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-16 02:56:52,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2024-11-16 02:56:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 74 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:52,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2024-11-16 02:56:52,284 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 59 [2024-11-16 02:56:52,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:52,284 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2024-11-16 02:56:52,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 27 states have internal predecessors, (71), 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) [2024-11-16 02:56:52,284 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2024-11-16 02:56:52,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 02:56:52,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:52,285 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:52,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:52,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:52,486 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:52,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash 660097656, now seen corresponding path program 13 times [2024-11-16 02:56:52,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:52,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644924982] [2024-11-16 02:56:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:52,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 20 proven. 52 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:56:52,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:52,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644924982] [2024-11-16 02:56:52,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644924982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:52,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994364456] [2024-11-16 02:56:52,686 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:56:52,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:52,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:52,688 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:52,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 02:56:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:52,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 02:56:52,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:56:52,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:56:53,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994364456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:53,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:53,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-16 02:56:53,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442405709] [2024-11-16 02:56:53,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:53,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 02:56:53,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:53,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 02:56:53,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-16 02:56:53,032 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 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) [2024-11-16 02:56:53,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:53,212 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2024-11-16 02:56:53,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 02:56:53,212 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 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 63 [2024-11-16 02:56:53,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:53,213 INFO L225 Difference]: With dead ends: 82 [2024-11-16 02:56:53,213 INFO L226 Difference]: Without dead ends: 77 [2024-11-16 02:56:53,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 106 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2024-11-16 02:56:53,214 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 115 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:53,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 178 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:53,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-16 02:56:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-16 02:56:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.105263157894737) internal successors, (84), 76 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2024-11-16 02:56:53,240 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 63 [2024-11-16 02:56:53,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:53,241 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2024-11-16 02:56:53,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 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) [2024-11-16 02:56:53,241 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2024-11-16 02:56:53,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 02:56:53,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:53,241 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:53,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:53,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:53,442 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:53,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:53,442 INFO L85 PathProgramCache]: Analyzing trace with hash 620626327, now seen corresponding path program 14 times [2024-11-16 02:56:53,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:53,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067959962] [2024-11-16 02:56:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:53,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:56,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:56,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067959962] [2024-11-16 02:56:56,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067959962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:56,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944443781] [2024-11-16 02:56:56,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:56:56,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:56,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:56,566 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:56,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 02:56:56,677 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:56:56,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:56,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-16 02:56:56,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:56,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:56:56,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:56,936 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:56,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-16 02:56:57,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:57,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-16 02:56:57,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:57,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 41 [2024-11-16 02:56:57,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:57,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-11-16 02:56:57,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:57,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-11-16 02:56:57,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:57,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:58,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:58,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:58,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:58,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:56:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:58,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:00,423 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 410 treesize of output 386 [2024-11-16 02:57:00,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:00,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 1720269633606 treesize of output 1696647313755 [2024-11-16 02:57:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:57:02,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944443781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:02,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:02,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 36, 36] total 96 [2024-11-16 02:57:02,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332047020] [2024-11-16 02:57:02,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:02,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-16 02:57:02,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:02,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-16 02:57:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=885, Invalid=8235, Unknown=0, NotChecked=0, Total=9120 [2024-11-16 02:57:02,842 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 96 states, 96 states have (on average 1.75) internal successors, (168), 96 states have internal predecessors, (168), 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) [2024-11-16 02:57:14,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:14,327 INFO L93 Difference]: Finished difference Result 228 states and 266 transitions. [2024-11-16 02:57:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-16 02:57:14,327 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.75) internal successors, (168), 96 states have internal predecessors, (168), 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 65 [2024-11-16 02:57:14,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:14,328 INFO L225 Difference]: With dead ends: 228 [2024-11-16 02:57:14,328 INFO L226 Difference]: Without dead ends: 191 [2024-11-16 02:57:14,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5977 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=2249, Invalid=16657, Unknown=0, NotChecked=0, Total=18906 [2024-11-16 02:57:14,330 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 157 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:14,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1315 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 02:57:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-16 02:57:14,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 149. [2024-11-16 02:57:14,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.1554054054054055) internal successors, (171), 148 states have internal predecessors, (171), 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) [2024-11-16 02:57:14,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 171 transitions. [2024-11-16 02:57:14,358 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 171 transitions. Word has length 65 [2024-11-16 02:57:14,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:14,359 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 171 transitions. [2024-11-16 02:57:14,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.75) internal successors, (168), 96 states have internal predecessors, (168), 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) [2024-11-16 02:57:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 171 transitions. [2024-11-16 02:57:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 02:57:14,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:14,360 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:14,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-16 02:57:14,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:14,560 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:14,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:14,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1582240344, now seen corresponding path program 5 times [2024-11-16 02:57:14,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:14,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909639910] [2024-11-16 02:57:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:14,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 2 proven. 112 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 02:57:15,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:15,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909639910] [2024-11-16 02:57:15,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909639910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:15,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385320335] [2024-11-16 02:57:15,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:57:15,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:15,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:15,381 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:15,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 02:57:17,010 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-16 02:57:17,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:17,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-16 02:57:17,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:17,076 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 13 treesize of output 9 [2024-11-16 02:57:17,103 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2024-11-16 02:57:17,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-16 02:57:17,188 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-11-16 02:57:17,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 27 [2024-11-16 02:57:17,245 INFO L349 Elim1Store]: treesize reduction 35, result has 23.9 percent of original size [2024-11-16 02:57:17,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 27 [2024-11-16 02:57:17,306 INFO L349 Elim1Store]: treesize reduction 35, result has 23.9 percent of original size [2024-11-16 02:57:17,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 27 [2024-11-16 02:57:17,365 INFO L349 Elim1Store]: treesize reduction 35, result has 23.9 percent of original size [2024-11-16 02:57:17,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 27 [2024-11-16 02:57:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 33 proven. 78 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 02:57:17,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:57:17,611 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 23 treesize of output 21 [2024-11-16 02:57:17,614 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 25 treesize of output 21 [2024-11-16 02:57:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 35 proven. 76 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 02:57:17,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385320335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:57:17,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:57:17,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 38 [2024-11-16 02:57:17,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368222136] [2024-11-16 02:57:17,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:57:17,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-16 02:57:17,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:57:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-16 02:57:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 02:57:17,625 INFO L87 Difference]: Start difference. First operand 149 states and 171 transitions. Second operand has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 38 states have internal predecessors, (118), 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) [2024-11-16 02:57:18,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:57:18,205 INFO L93 Difference]: Finished difference Result 197 states and 224 transitions. [2024-11-16 02:57:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 02:57:18,206 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 38 states have internal predecessors, (118), 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 65 [2024-11-16 02:57:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:57:18,207 INFO L225 Difference]: With dead ends: 197 [2024-11-16 02:57:18,207 INFO L226 Difference]: Without dead ends: 159 [2024-11-16 02:57:18,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=296, Invalid=2154, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 02:57:18,208 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 43 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:57:18,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 510 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:57:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-16 02:57:18,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2024-11-16 02:57:18,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.1418918918918919) internal successors, (169), 148 states have internal predecessors, (169), 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) [2024-11-16 02:57:18,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 169 transitions. [2024-11-16 02:57:18,241 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 169 transitions. Word has length 65 [2024-11-16 02:57:18,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:57:18,241 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 169 transitions. [2024-11-16 02:57:18,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 38 states have internal predecessors, (118), 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) [2024-11-16 02:57:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 169 transitions. [2024-11-16 02:57:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 02:57:18,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:57:18,242 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:57:18,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-16 02:57:18,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-16 02:57:18,442 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:57:18,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:57:18,443 INFO L85 PathProgramCache]: Analyzing trace with hash -243511466, now seen corresponding path program 15 times [2024-11-16 02:57:18,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:57:18,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064216978] [2024-11-16 02:57:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:57:18,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:57:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:57:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 30 proven. 98 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 02:57:18,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:57:18,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064216978] [2024-11-16 02:57:18,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064216978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:57:18,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295681461] [2024-11-16 02:57:18,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:57:18,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:57:18,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:57:18,664 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:57:18,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 02:57:19,044 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-16 02:57:19,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:57:19,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-16 02:57:19,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:57:19,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:57:19,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 02:57:19,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:57:19,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-16 02:57:19,344 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2024-11-16 02:57:19,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 41 [2024-11-16 02:57:19,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:19,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:19,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:19,486 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-16 02:57:19,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 48 treesize of output 51