./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/copy-3-n-u.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-multidimensional/copy-3-n-u.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 caaec4b6d97bde36a1fbc7dfb6c9c9f88e0ac7fb0d2e87f4054fca32d8e102e9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:42:12,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:42:12,416 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:42:12,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:42:12,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:42:12,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:42:12,453 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:42:12,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:42:12,455 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:42:12,456 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:42:12,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:42:12,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:42:12,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:42:12,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:42:12,460 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:42:12,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:42:12,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:42:12,461 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:42:12,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:42:12,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:42:12,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:42:12,464 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:42:12,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:42:12,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:42:12,466 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:42:12,467 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:42:12,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:42:12,468 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:42:12,468 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:42:12,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:42:12,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:42:12,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:42:12,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:42:12,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:42:12,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:42:12,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:42:12,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:42:12,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:42:12,471 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:42:12,471 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:42:12,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:42:12,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:42:12,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caaec4b6d97bde36a1fbc7dfb6c9c9f88e0ac7fb0d2e87f4054fca32d8e102e9 [2024-11-16 02:42:12,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:42:12,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:42:12,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:42:12,779 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:42:12,779 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:42:12,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/copy-3-n-u.c [2024-11-16 02:42:14,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:42:14,402 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:42:14,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-3-n-u.c [2024-11-16 02:42:14,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2a162ab/9fc4351e7046424c868d5c91ab36f639/FLAG6e7e9396e [2024-11-16 02:42:14,422 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2a162ab/9fc4351e7046424c868d5c91ab36f639 [2024-11-16 02:42:14,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:42:14,425 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:42:14,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:42:14,427 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:42:14,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:42:14,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2d44d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14, skipping insertion in model container [2024-11-16 02:42:14,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,451 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:42:14,619 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-multidimensional/copy-3-n-u.c[322,335] [2024-11-16 02:42:14,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:42:14,658 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:42:14,668 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-multidimensional/copy-3-n-u.c[322,335] [2024-11-16 02:42:14,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:42:14,713 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:42:14,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14 WrapperNode [2024-11-16 02:42:14,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:42:14,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:42:14,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:42:14,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:42:14,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,752 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2024-11-16 02:42:14,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:42:14,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:42:14,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:42:14,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:42:14,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,772 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,784 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 2, 3]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-16 02:42:14,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,790 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,791 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:42:14,799 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:42:14,799 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:42:14,801 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:42:14,802 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:42:14,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:14,843 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 02:42:14,849 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 02:42:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:42:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:42:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:42:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:42:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:42:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:42:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:42:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:42:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:42:14,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:42:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:42:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:42:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:42:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:42:14,983 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:42:14,985 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:42:15,219 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L18: call ULTIMATE.dealloc(main_~#A~0#1.base, main_~#A~0#1.offset);havoc main_~#A~0#1.base, main_~#A~0#1.offset;call ULTIMATE.dealloc(main_~#B~0#1.base, main_~#B~0#1.offset);havoc main_~#B~0#1.base, main_~#B~0#1.offset; [2024-11-16 02:42:15,243 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-16 02:42:15,243 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:42:15,258 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:42:15,258 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:42:15,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:42:15 BoogieIcfgContainer [2024-11-16 02:42:15,259 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:42:15,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:42:15,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:42:15,293 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:42:15,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:42:14" (1/3) ... [2024-11-16 02:42:15,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b39ed10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:42:15, skipping insertion in model container [2024-11-16 02:42:15,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (2/3) ... [2024-11-16 02:42:15,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b39ed10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:42:15, skipping insertion in model container [2024-11-16 02:42:15,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:42:15" (3/3) ... [2024-11-16 02:42:15,298 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-3-n-u.c [2024-11-16 02:42:15,317 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:42:15,317 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:42:15,379 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:42:15,385 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;@2876caef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:42:15,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:42:15,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 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 02:42:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 02:42:15,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:15,397 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:15,397 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:15,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:15,402 INFO L85 PathProgramCache]: Analyzing trace with hash 605977846, now seen corresponding path program 1 times [2024-11-16 02:42:15,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:15,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095341560] [2024-11-16 02:42:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:15,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,583 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 02:42:15,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:15,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095341560] [2024-11-16 02:42:15,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095341560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:42:15,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:42:15,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:42:15,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143497358] [2024-11-16 02:42:15,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:42:15,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:42:15,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:15,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:42:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:42:15,618 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 02:42:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:15,634 INFO L93 Difference]: Finished difference Result 73 states and 109 transitions. [2024-11-16 02:42:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:42:15,636 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2024-11-16 02:42:15,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:15,643 INFO L225 Difference]: With dead ends: 73 [2024-11-16 02:42:15,644 INFO L226 Difference]: Without dead ends: 33 [2024-11-16 02:42:15,646 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 02:42:15,649 INFO L432 NwaCegarLoop]: 45 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, 45 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 02:42:15,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:42:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-16 02:42:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-16 02:42:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 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 02:42:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-11-16 02:42:15,687 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 15 [2024-11-16 02:42:15,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:15,688 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-11-16 02:42:15,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 02:42:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-11-16 02:42:15,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-16 02:42:15,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:15,691 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 02:42:15,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:42:15,691 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:15,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1626531651, now seen corresponding path program 1 times [2024-11-16 02:42:15,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:15,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837874902] [2024-11-16 02:42:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,907 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 02:42:15,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:15,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837874902] [2024-11-16 02:42:15,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837874902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:42:15,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:42:15,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:42:15,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047053420] [2024-11-16 02:42:15,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:42:15,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:42:15,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:15,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:42:15,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:42:15,914 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 02:42:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:15,961 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2024-11-16 02:42:15,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:42:15,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 02:42:15,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:15,965 INFO L225 Difference]: With dead ends: 64 [2024-11-16 02:42:15,965 INFO L226 Difference]: Without dead ends: 41 [2024-11-16 02:42:15,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:42:15,967 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:15,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 65 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:42:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-16 02:42:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2024-11-16 02:42:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 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 02:42:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-11-16 02:42:15,978 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 17 [2024-11-16 02:42:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:15,979 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-11-16 02:42:15,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 02:42:15,979 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-11-16 02:42:15,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 02:42:15,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:15,980 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:15,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:42:15,980 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:15,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:15,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1778202633, now seen corresponding path program 1 times [2024-11-16 02:42:15,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:15,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204832522] [2024-11-16 02:42:15,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:15,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:42:16,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:16,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204832522] [2024-11-16 02:42:16,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204832522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:42:16,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:42:16,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:42:16,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857122296] [2024-11-16 02:42:16,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:42:16,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:42:16,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:16,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:42:16,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:42:16,103 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:42:16,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:16,177 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2024-11-16 02:42:16,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:42:16,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 02:42:16,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:16,183 INFO L225 Difference]: With dead ends: 86 [2024-11-16 02:42:16,185 INFO L226 Difference]: Without dead ends: 55 [2024-11-16 02:42:16,185 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 02:42:16,186 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 78 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:16,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 54 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:42:16,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-16 02:42:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2024-11-16 02:42:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 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 02:42:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-11-16 02:42:16,204 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 22 [2024-11-16 02:42:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:16,204 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-11-16 02:42:16,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:42:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-11-16 02:42:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 02:42:16,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:16,206 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:16,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 02:42:16,206 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:16,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:16,207 INFO L85 PathProgramCache]: Analyzing trace with hash 943979942, now seen corresponding path program 1 times [2024-11-16 02:42:16,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:16,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608343569] [2024-11-16 02:42:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:16,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:42:16,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:16,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608343569] [2024-11-16 02:42:16,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608343569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:42:16,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:42:16,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:42:16,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513960618] [2024-11-16 02:42:16,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:42:16,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:42:16,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:16,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:42:16,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:42:16,335 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 02:42:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:16,376 INFO L93 Difference]: Finished difference Result 89 states and 108 transitions. [2024-11-16 02:42:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:42:16,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 02:42:16,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:16,378 INFO L225 Difference]: With dead ends: 89 [2024-11-16 02:42:16,378 INFO L226 Difference]: Without dead ends: 52 [2024-11-16 02:42:16,379 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 02:42:16,380 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 52 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:16,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 64 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:42:16,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-16 02:42:16,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2024-11-16 02:42:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 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 02:42:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-11-16 02:42:16,388 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 27 [2024-11-16 02:42:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:16,389 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-11-16 02:42:16,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 02:42:16,389 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-11-16 02:42:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 02:42:16,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:16,391 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, 1, 1, 1, 1] [2024-11-16 02:42:16,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 02:42:16,392 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:16,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:16,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1744661255, now seen corresponding path program 1 times [2024-11-16 02:42:16,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:16,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758456220] [2024-11-16 02:42:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:16,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:42:16,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:16,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758456220] [2024-11-16 02:42:16,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758456220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:42:16,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:42:16,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:42:16,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365609757] [2024-11-16 02:42:16,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:42:16,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:42:16,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:16,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:42:16,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:42:16,505 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:42:16,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:16,556 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2024-11-16 02:42:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:42:16,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-16 02:42:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:16,558 INFO L225 Difference]: With dead ends: 104 [2024-11-16 02:42:16,558 INFO L226 Difference]: Without dead ends: 86 [2024-11-16 02:42:16,558 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 02:42:16,560 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 59 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:16,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 58 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:42:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-16 02:42:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 49. [2024-11-16 02:42:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1875) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:42:16,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-11-16 02:42:16,570 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 29 [2024-11-16 02:42:16,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:16,572 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-11-16 02:42:16,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:42:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-11-16 02:42:16,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 02:42:16,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:16,573 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:16,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 02:42:16,574 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:16,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:16,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1904780285, now seen corresponding path program 1 times [2024-11-16 02:42:16,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:16,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86089476] [2024-11-16 02:42:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:16,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:16,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:42:16,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:16,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86089476] [2024-11-16 02:42:16,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86089476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:16,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241961779] [2024-11-16 02:42:16,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:16,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:16,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:16,694 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 02:42:16,695 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 02:42:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:16,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:42:16,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:42:16,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:42:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:42:16,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241961779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:42:16,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:42:16,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 02:42:16,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387726461] [2024-11-16 02:42:16,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:42:16,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 02:42:16,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:16,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 02:42:16,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-16 02:42:16,922 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 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 02:42:17,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:17,051 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2024-11-16 02:42:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 02:42:17,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 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 02:42:17,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:17,053 INFO L225 Difference]: With dead ends: 127 [2024-11-16 02:42:17,053 INFO L226 Difference]: Without dead ends: 82 [2024-11-16 02:42:17,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-16 02:42:17,054 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 127 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:17,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 113 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:42:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-16 02:42:17,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2024-11-16 02:42:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 72 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 02:42:17,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2024-11-16 02:42:17,066 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 41 [2024-11-16 02:42:17,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:17,069 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2024-11-16 02:42:17,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 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 02:42:17,069 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2024-11-16 02:42:17,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-16 02:42:17,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:17,070 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:17,088 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 02:42:17,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 02:42:17,271 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:17,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:17,271 INFO L85 PathProgramCache]: Analyzing trace with hash -904319165, now seen corresponding path program 2 times [2024-11-16 02:42:17,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:17,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499883040] [2024-11-16 02:42:17,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:17,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:42:17,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:17,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499883040] [2024-11-16 02:42:17,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499883040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:17,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265316450] [2024-11-16 02:42:17,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:42:17,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:17,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:17,513 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 02:42:17,514 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 02:42:17,619 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:42:17,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:42:17,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 02:42:17,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:42:17,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:42:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:42:17,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265316450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:42:17,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:42:17,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-16 02:42:17,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916108967] [2024-11-16 02:42:17,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:42:17,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 02:42:17,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:17,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 02:42:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-16 02:42:17,849 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 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 02:42:18,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:18,090 INFO L93 Difference]: Finished difference Result 217 states and 254 transitions. [2024-11-16 02:42:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:42:18,090 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 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 53 [2024-11-16 02:42:18,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:18,091 INFO L225 Difference]: With dead ends: 217 [2024-11-16 02:42:18,093 INFO L226 Difference]: Without dead ends: 148 [2024-11-16 02:42:18,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:42:18,095 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 247 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:18,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 206 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:42:18,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-16 02:42:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2024-11-16 02:42:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.15) internal successors, (138), 120 states have internal predecessors, (138), 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 02:42:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2024-11-16 02:42:18,122 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 53 [2024-11-16 02:42:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:18,124 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2024-11-16 02:42:18,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 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 02:42:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2024-11-16 02:42:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 02:42:18,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:18,127 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:18,143 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 02:42:18,327 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,SelfDestructingSolverStorable6 [2024-11-16 02:42:18,328 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:18,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:18,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2076741565, now seen corresponding path program 3 times [2024-11-16 02:42:18,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:18,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120527797] [2024-11-16 02:42:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:18,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 4 proven. 110 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-16 02:42:18,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:18,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120527797] [2024-11-16 02:42:18,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120527797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:18,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505729810] [2024-11-16 02:42:18,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:42:18,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:18,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:18,703 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 02:42:18,704 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 02:42:18,793 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 02:42:18,794 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:42:18,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:42:18,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-16 02:42:18,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:42:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-16 02:42:19,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505729810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:42:19,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:42:19,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 20 [2024-11-16 02:42:19,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142216898] [2024-11-16 02:42:19,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:42:19,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 02:42:19,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:19,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 02:42:19,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:42:19,123 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:42:20,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:20,560 INFO L93 Difference]: Finished difference Result 751 states and 812 transitions. [2024-11-16 02:42:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-16 02:42:20,560 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-16 02:42:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:20,563 INFO L225 Difference]: With dead ends: 751 [2024-11-16 02:42:20,563 INFO L226 Difference]: Without dead ends: 634 [2024-11-16 02:42:20,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1328 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1513, Invalid=3179, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 02:42:20,566 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 2652 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2652 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:20,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2652 Valid, 236 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:42:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-16 02:42:20,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 321. [2024-11-16 02:42:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.096875) internal successors, (351), 320 states have internal predecessors, (351), 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 02:42:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 351 transitions. [2024-11-16 02:42:20,611 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 351 transitions. Word has length 77 [2024-11-16 02:42:20,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:20,611 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 351 transitions. [2024-11-16 02:42:20,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:42:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 351 transitions. [2024-11-16 02:42:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-16 02:42:20,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:20,618 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 44, 44, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:20,634 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 02:42:20,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:20,819 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:20,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:20,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1686812093, now seen corresponding path program 4 times [2024-11-16 02:42:20,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:20,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236706689] [2024-11-16 02:42:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:20,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4688 backedges. 886 proven. 132 refuted. 0 times theorem prover too weak. 3670 trivial. 0 not checked. [2024-11-16 02:42:21,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:21,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236706689] [2024-11-16 02:42:21,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236706689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:21,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16775813] [2024-11-16 02:42:21,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:42:21,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:21,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:21,736 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 02:42:21,738 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 02:42:22,330 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:42:22,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:42:22,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 206 conjuncts are in the unsatisfiable core [2024-11-16 02:42:22,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:22,726 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 02:42:22,791 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 31 treesize of output 30 [2024-11-16 02:42:22,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:22,883 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 46 treesize of output 48 [2024-11-16 02:42:23,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:23,003 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 61 treesize of output 66 [2024-11-16 02:42:23,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:23,147 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 76 treesize of output 84 [2024-11-16 02:42:23,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:23,286 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 91 treesize of output 102 [2024-11-16 02:42:23,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:23,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 106 treesize of output 120 [2024-11-16 02:42:23,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:23,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 121 treesize of output 138 [2024-11-16 02:42:23,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:23,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 136 treesize of output 156 [2024-11-16 02:42:23,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:23,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 151 treesize of output 174 [2024-11-16 02:42:24,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:24,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 166 treesize of output 192 [2024-11-16 02:42:25,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:25,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 181 treesize of output 210 [2024-11-16 02:42:25,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:25,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 196 treesize of output 228 [2024-11-16 02:42:25,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:25,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 211 treesize of output 246 [2024-11-16 02:42:25,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:25,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 226 treesize of output 264 [2024-11-16 02:42:26,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:26,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 241 treesize of output 282 [2024-11-16 02:42:26,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:26,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 256 treesize of output 300 [2024-11-16 02:42:26,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:26,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 271 treesize of output 318 [2024-11-16 02:42:27,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:27,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 286 treesize of output 336 [2024-11-16 02:42:27,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:27,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 301 treesize of output 354 [2024-11-16 02:42:27,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:27,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 316 treesize of output 372 [2024-11-16 02:42:28,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:28,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 331 treesize of output 390 [2024-11-16 02:42:30,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:30,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 231 case distinctions, treesize of input 346 treesize of output 408 [2024-11-16 02:42:30,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:30,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 253 case distinctions, treesize of input 361 treesize of output 426 [2024-11-16 02:42:30,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:30,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 0 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 376 treesize of output 444 [2024-11-16 02:42:31,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:31,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 25 select indices, 25 select index equivalence classes, 0 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 300 case distinctions, treesize of input 391 treesize of output 462 [2024-11-16 02:42:31,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:31,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 26 select indices, 26 select index equivalence classes, 0 disjoint index pairs (out of 325 index pairs), introduced 26 new quantified variables, introduced 325 case distinctions, treesize of input 406 treesize of output 480 [2024-11-16 02:42:32,544 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:32,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 27 select indices, 27 select index equivalence classes, 0 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 351 case distinctions, treesize of input 421 treesize of output 498 [2024-11-16 02:42:33,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:33,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 0 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 378 case distinctions, treesize of input 436 treesize of output 516 [2024-11-16 02:42:34,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:34,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 0 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 406 case distinctions, treesize of input 451 treesize of output 534 [2024-11-16 02:42:34,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:34,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 30 select indices, 30 select index equivalence classes, 0 disjoint index pairs (out of 435 index pairs), introduced 30 new quantified variables, introduced 435 case distinctions, treesize of input 466 treesize of output 552 [2024-11-16 02:42:35,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:35,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 31 select indices, 31 select index equivalence classes, 0 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 465 case distinctions, treesize of input 481 treesize of output 570 [2024-11-16 02:42:36,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:36,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 32 select indices, 32 select index equivalence classes, 0 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 496 case distinctions, treesize of input 496 treesize of output 588 [2024-11-16 02:42:39,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:39,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 33 select indices, 33 select index equivalence classes, 0 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 528 case distinctions, treesize of input 511 treesize of output 606 [2024-11-16 02:42:40,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:40,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 34 select indices, 34 select index equivalence classes, 0 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 561 case distinctions, treesize of input 526 treesize of output 624 [2024-11-16 02:42:41,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:42:41,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 35 select indices, 35 select index equivalence classes, 0 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 595 case distinctions, treesize of input 541 treesize of output 642 [2024-11-16 02:42:42,921 INFO L349 Elim1Store]: treesize reduction 1102, result has 22.7 percent of original size [2024-11-16 02:42:42,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 36 select indices, 36 select index equivalence classes, 0 disjoint index pairs (out of 630 index pairs), introduced 36 new quantified variables, introduced 666 case distinctions, treesize of input 562 treesize of output 666 [2024-11-16 02:42:44,876 INFO L349 Elim1Store]: treesize reduction 1486, result has 18.4 percent of original size [2024-11-16 02:42:44,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 37 select indices, 37 select index equivalence classes, 0 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 703 case distinctions, treesize of input 583 treesize of output 690 [2024-11-16 02:42:46,951 INFO L349 Elim1Store]: treesize reduction 1878, result has 15.6 percent of original size [2024-11-16 02:42:46,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 38 select indices, 38 select index equivalence classes, 0 disjoint index pairs (out of 703 index pairs), introduced 38 new quantified variables, introduced 741 case distinctions, treesize of input 604 treesize of output 714 [2024-11-16 02:42:49,660 INFO L349 Elim1Store]: treesize reduction 2278, result has 13.6 percent of original size [2024-11-16 02:42:49,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 39 select indices, 39 select index equivalence classes, 0 disjoint index pairs (out of 741 index pairs), introduced 39 new quantified variables, introduced 780 case distinctions, treesize of input 625 treesize of output 738 [2024-11-16 02:42:52,718 INFO L349 Elim1Store]: treesize reduction 2686, result has 12.1 percent of original size [2024-11-16 02:42:52,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 40 select indices, 40 select index equivalence classes, 0 disjoint index pairs (out of 780 index pairs), introduced 40 new quantified variables, introduced 820 case distinctions, treesize of input 646 treesize of output 762 [2024-11-16 02:42:56,404 INFO L349 Elim1Store]: treesize reduction 3102, result has 11.0 percent of original size [2024-11-16 02:42:56,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 41 select indices, 41 select index equivalence classes, 0 disjoint index pairs (out of 820 index pairs), introduced 41 new quantified variables, introduced 861 case distinctions, treesize of input 667 treesize of output 786 [2024-11-16 02:43:01,059 INFO L349 Elim1Store]: treesize reduction 3526, result has 10.1 percent of original size [2024-11-16 02:43:01,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 42 select indices, 42 select index equivalence classes, 0 disjoint index pairs (out of 861 index pairs), introduced 42 new quantified variables, introduced 903 case distinctions, treesize of input 688 treesize of output 810 [2024-11-16 02:43:12,459 INFO L349 Elim1Store]: treesize reduction 3958, result has 9.3 percent of original size [2024-11-16 02:43:12,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 43 select indices, 43 select index equivalence classes, 0 disjoint index pairs (out of 903 index pairs), introduced 43 new quantified variables, introduced 946 case distinctions, treesize of input 709 treesize of output 834 [2024-11-16 02:43:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4688 backedges. 64 proven. 3181 refuted. 0 times theorem prover too weak. 1443 trivial. 0 not checked. [2024-11-16 02:43:34,547 INFO L311 TraceCheckSpWp]: Computing backward predicates...