./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i --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/forester-heap/sll-simple-white-blue-1.i -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 b63900034700ff8018e29578512f73f88317ae4b603a38b2f2f558c77b57812d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:33:29,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:33:29,882 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:33:29,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:33:29,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:33:29,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:33:29,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:33:29,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:33:29,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:33:29,931 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:33:29,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:33:29,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:33:29,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:33:29,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:33:29,932 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:33:29,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:33:29,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:33:29,936 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:33:29,936 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:33:29,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:33:29,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:33:29,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:33:29,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:33:29,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:33:29,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:33:29,941 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:33:29,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:33:29,941 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:33:29,941 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:33:29,941 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:33:29,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:33:29,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:33:29,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:33:29,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:33:29,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:33:29,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:33:29,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:33:29,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:33:29,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:33:29,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:33:29,943 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:33:29,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:33:29,949 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b63900034700ff8018e29578512f73f88317ae4b603a38b2f2f558c77b57812d [2024-11-16 06:33:30,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:33:30,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:33:30,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:33:30,196 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:33:30,197 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:33:30,198 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i [2024-11-16 06:33:31,530 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:33:31,736 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:33:31,736 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i [2024-11-16 06:33:31,745 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f7c5765d/2648f6aea3be4b2e884b2e7bff5337e4/FLAGd8de84f4f [2024-11-16 06:33:32,109 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f7c5765d/2648f6aea3be4b2e884b2e7bff5337e4 [2024-11-16 06:33:32,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:33:32,113 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:33:32,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:33:32,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:33:32,118 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:33:32,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad94b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32, skipping insertion in model container [2024-11-16 06:33:32,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,147 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:33:32,344 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/forester-heap/sll-simple-white-blue-1.i[22605,22618] [2024-11-16 06:33:32,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:33:32,368 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:33:32,403 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/forester-heap/sll-simple-white-blue-1.i[22605,22618] [2024-11-16 06:33:32,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:33:32,426 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:33:32,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32 WrapperNode [2024-11-16 06:33:32,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:33:32,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:33:32,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:33:32,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:33:32,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,454 INFO L138 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 105 [2024-11-16 06:33:32,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:33:32,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:33:32,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:33:32,455 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:33:32,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,478 INFO L175 MemorySlicer]: Split 22 memory accesses to 2 slices as follows [2, 20]. 91 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 10 writes are split as follows [0, 10]. [2024-11-16 06:33:32,478 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,479 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,515 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:33:32,522 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:33:32,522 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:33:32,522 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:33:32,523 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (1/1) ... [2024-11-16 06:33:32,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:33:32,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:33:32,554 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 06:33:32,564 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 06:33:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 06:33:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 06:33:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 06:33:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 06:33:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 06:33:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:33:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 06:33:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 06:33:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 06:33:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 06:33:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 06:33:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:33:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 06:33:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:33:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:33:32,720 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:33:32,722 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:33:32,871 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-16 06:33:32,871 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:33:32,886 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:33:32,887 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:33:32,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:33:32 BoogieIcfgContainer [2024-11-16 06:33:32,887 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:33:32,889 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:33:32,889 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:33:32,891 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:33:32,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:33:32" (1/3) ... [2024-11-16 06:33:32,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533452d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:33:32, skipping insertion in model container [2024-11-16 06:33:32,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:33:32" (2/3) ... [2024-11-16 06:33:32,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533452d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:33:32, skipping insertion in model container [2024-11-16 06:33:32,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:33:32" (3/3) ... [2024-11-16 06:33:32,893 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-1.i [2024-11-16 06:33:32,905 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:33:32,905 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:33:32,941 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:33:32,946 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;@50175d98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:33:32,946 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:33:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:33:32,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 06:33:32,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:33:32,954 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:33:32,954 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:33:32,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:33:32,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1516546095, now seen corresponding path program 1 times [2024-11-16 06:33:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:33:32,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801897019] [2024-11-16 06:33:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:32,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:33:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:33,119 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 06:33:33,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:33:33,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801897019] [2024-11-16 06:33:33,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801897019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:33:33,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:33:33,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:33:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359261464] [2024-11-16 06:33:33,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:33:33,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:33:33,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:33:33,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:33:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:33:33,143 INFO L87 Difference]: Start difference. First operand has 31 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:33:33,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:33:33,154 INFO L93 Difference]: Finished difference Result 56 states and 83 transitions. [2024-11-16 06:33:33,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:33:33,156 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-16 06:33:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:33:33,161 INFO L225 Difference]: With dead ends: 56 [2024-11-16 06:33:33,161 INFO L226 Difference]: Without dead ends: 22 [2024-11-16 06:33:33,163 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 06:33:33,165 INFO L432 NwaCegarLoop]: 35 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, 35 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 06:33:33,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:33:33,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-16 06:33:33,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-16 06:33:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 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 06:33:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-16 06:33:33,200 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 14 [2024-11-16 06:33:33,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:33:33,200 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-16 06:33:33,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:33:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-16 06:33:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 06:33:33,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:33:33,201 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:33:33,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:33:33,202 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:33:33,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:33:33,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1785089224, now seen corresponding path program 1 times [2024-11-16 06:33:33,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:33:33,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368773102] [2024-11-16 06:33:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:33,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:33:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:33,824 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 06:33:33,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:33:33,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368773102] [2024-11-16 06:33:33,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368773102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:33:33,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:33:33,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 06:33:33,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955289358] [2024-11-16 06:33:33,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:33:33,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:33:33,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:33:33,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:33:33,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:33:33,828 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:33:34,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:33:34,029 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2024-11-16 06:33:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 06:33:34,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-16 06:33:34,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:33:34,033 INFO L225 Difference]: With dead ends: 60 [2024-11-16 06:33:34,033 INFO L226 Difference]: Without dead ends: 56 [2024-11-16 06:33:34,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:33:34,037 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:33:34,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 84 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:33:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-16 06:33:34,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 33. [2024-11-16 06:33:34,044 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 06:33:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-11-16 06:33:34,045 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 16 [2024-11-16 06:33:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:33:34,045 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-11-16 06:33:34,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:33:34,045 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-11-16 06:33:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 06:33:34,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:33:34,046 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:33:34,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:33:34,046 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:33:34,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:33:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2134358967, now seen corresponding path program 1 times [2024-11-16 06:33:34,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:33:34,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447780030] [2024-11-16 06:33:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:34,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:33:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:33:34,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447780030] [2024-11-16 06:33:34,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447780030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:33:34,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224049128] [2024-11-16 06:33:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:34,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:33:34,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:33:34,363 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 06:33:34,365 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 06:33:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:34,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 06:33:34,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:33:34,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2024-11-16 06:33:34,515 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 06:33:34,515 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:33:34,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224049128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:33:34,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:33:34,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-16 06:33:34,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440281042] [2024-11-16 06:33:34,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:33:34,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:33:34,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:33:34,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:33:34,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:33:34,517 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 06:33:34,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:33:34,586 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2024-11-16 06:33:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:33:34,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2024-11-16 06:33:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:33:34,587 INFO L225 Difference]: With dead ends: 56 [2024-11-16 06:33:34,587 INFO L226 Difference]: Without dead ends: 45 [2024-11-16 06:33:34,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-16 06:33:34,589 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:33:34,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 75 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:33:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-16 06:33:34,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2024-11-16 06:33:34,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 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 06:33:34,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2024-11-16 06:33:34,597 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 18 [2024-11-16 06:33:34,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:33:34,597 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2024-11-16 06:33:34,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 06:33:34,598 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2024-11-16 06:33:34,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 06:33:34,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:33:34,600 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:33:34,613 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 06:33:34,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:33:34,801 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:33:34,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:33:34,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1631395513, now seen corresponding path program 1 times [2024-11-16 06:33:34,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:33:34,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523240894] [2024-11-16 06:33:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:34,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:33:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:35,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:33:35,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523240894] [2024-11-16 06:33:35,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523240894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:33:35,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979727866] [2024-11-16 06:33:35,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:35,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:33:35,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:33:35,251 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 06:33:35,257 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 06:33:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:35,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 06:33:35,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:33:35,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-16 06:33:35,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 06:33:35,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2024-11-16 06:33:35,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2024-11-16 06:33:35,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 06:33:35,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2024-11-16 06:33:35,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 06:33:35,513 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-16 06:33:35,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-16 06:33:35,530 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-16 06:33:35,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-16 06:33:35,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 06:33:35,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-16 06:33:35,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-16 06:33:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:35,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:33:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:35,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979727866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:33:35,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:33:35,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-16 06:33:35,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736289195] [2024-11-16 06:33:35,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:33:35,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 06:33:35,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:33:35,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 06:33:35,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=252, Unknown=2, NotChecked=0, Total=306 [2024-11-16 06:33:35,795 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 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 06:33:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:33:36,110 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2024-11-16 06:33:36,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 06:33:36,110 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-16 06:33:36,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:33:36,111 INFO L225 Difference]: With dead ends: 78 [2024-11-16 06:33:36,111 INFO L226 Difference]: Without dead ends: 74 [2024-11-16 06:33:36,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=469, Unknown=2, NotChecked=0, Total=600 [2024-11-16 06:33:36,112 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 101 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:33:36,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 222 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:33:36,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-16 06:33:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 40. [2024-11-16 06:33:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 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 06:33:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2024-11-16 06:33:36,118 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 18 [2024-11-16 06:33:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:33:36,118 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2024-11-16 06:33:36,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 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 06:33:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2024-11-16 06:33:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-16 06:33:36,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:33:36,118 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:33:36,138 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 06:33:36,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 06:33:36,319 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:33:36,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:33:36,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2070269596, now seen corresponding path program 1 times [2024-11-16 06:33:36,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:33:36,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595850331] [2024-11-16 06:33:36,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:36,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:33:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:36,471 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 06:33:36,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:33:36,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595850331] [2024-11-16 06:33:36,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595850331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:33:36,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:33:36,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 06:33:36,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697608954] [2024-11-16 06:33:36,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:33:36,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 06:33:36,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:33:36,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 06:33:36,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 06:33:36,474 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 06:33:36,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:33:36,580 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2024-11-16 06:33:36,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 06:33:36,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-16 06:33:36,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:33:36,581 INFO L225 Difference]: With dead ends: 90 [2024-11-16 06:33:36,582 INFO L226 Difference]: Without dead ends: 67 [2024-11-16 06:33:36,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:33:36,583 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:33:36,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 121 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:33:36,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-16 06:33:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 46. [2024-11-16 06:33:36,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 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 06:33:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2024-11-16 06:33:36,588 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 19 [2024-11-16 06:33:36,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:33:36,589 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2024-11-16 06:33:36,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 06:33:36,589 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2024-11-16 06:33:36,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 06:33:36,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:33:36,589 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:33:36,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 06:33:36,590 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:33:36,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:33:36,590 INFO L85 PathProgramCache]: Analyzing trace with hash -742868516, now seen corresponding path program 1 times [2024-11-16 06:33:36,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:33:36,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892344852] [2024-11-16 06:33:36,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:36,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:33:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:36,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:33:36,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892344852] [2024-11-16 06:33:36,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892344852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:33:36,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352325205] [2024-11-16 06:33:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:36,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:33:36,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:33:36,735 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 06:33:36,740 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 06:33:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:36,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 06:33:36,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:33:36,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-16 06:33:36,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-16 06:33:36,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-16 06:33:36,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-16 06:33:36,876 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2024-11-16 06:33:36,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2024-11-16 06:33:36,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2024-11-16 06:33:36,898 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-16 06:33:36,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-16 06:33:36,910 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-16 06:33:36,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-16 06:33:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:37,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:33:37,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:37,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2024-11-16 06:33:37,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:37,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2024-11-16 06:33:37,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-16 06:33:37,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-16 06:33:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:37,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352325205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:33:37,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:33:37,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-16 06:33:37,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17151251] [2024-11-16 06:33:37,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:33:37,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 06:33:37,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:33:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 06:33:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-16 06:33:37,268 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:33:37,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:33:37,478 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2024-11-16 06:33:37,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:33:37,479 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-16 06:33:37,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:33:37,480 INFO L225 Difference]: With dead ends: 65 [2024-11-16 06:33:37,480 INFO L226 Difference]: Without dead ends: 47 [2024-11-16 06:33:37,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:33:37,481 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:33:37,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 120 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:33:37,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-16 06:33:37,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-16 06:33:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 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 06:33:37,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2024-11-16 06:33:37,486 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 20 [2024-11-16 06:33:37,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:33:37,487 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2024-11-16 06:33:37,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:33:37,487 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2024-11-16 06:33:37,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 06:33:37,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:33:37,488 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] [2024-11-16 06:33:37,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 06:33:37,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:33:37,693 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:33:37,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:33:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash -577408539, now seen corresponding path program 1 times [2024-11-16 06:33:37,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:33:37,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662719324] [2024-11-16 06:33:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:37,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:33:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:37,766 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 06:33:37,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:33:37,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662719324] [2024-11-16 06:33:37,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662719324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:33:37,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:33:37,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 06:33:37,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392680138] [2024-11-16 06:33:37,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:33:37,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 06:33:37,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:33:37,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 06:33:37,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:33:37,768 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 06:33:37,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:33:37,834 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2024-11-16 06:33:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:33:37,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-16 06:33:37,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:33:37,835 INFO L225 Difference]: With dead ends: 68 [2024-11-16 06:33:37,835 INFO L226 Difference]: Without dead ends: 49 [2024-11-16 06:33:37,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-16 06:33:37,835 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:33:37,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 74 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:33:37,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-16 06:33:37,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2024-11-16 06:33:37,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 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 06:33:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-11-16 06:33:37,839 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 21 [2024-11-16 06:33:37,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:33:37,840 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-11-16 06:33:37,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 06:33:37,840 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-11-16 06:33:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 06:33:37,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:33:37,840 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:33:37,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 06:33:37,841 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:33:37,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:33:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1498876197, now seen corresponding path program 1 times [2024-11-16 06:33:37,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:33:37,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563560353] [2024-11-16 06:33:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:37,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:33:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:38,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:33:38,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563560353] [2024-11-16 06:33:38,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563560353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:33:38,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066602162] [2024-11-16 06:33:38,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:38,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:33:38,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:33:38,192 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 06:33:38,193 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 06:33:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:38,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-16 06:33:38,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:33:38,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-16 06:33:38,306 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-16 06:33:38,315 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-16 06:33:38,316 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 79 [2024-11-16 06:33:38,318 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2024-11-16 06:33:38,329 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-16 06:33:38,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2024-11-16 06:33:38,346 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-16 06:33:38,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-16 06:33:38,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2024-11-16 06:33:38,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-16 06:33:38,444 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2024-11-16 06:33:38,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2024-11-16 06:33:38,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2024-11-16 06:33:38,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 06:33:38,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 36 [2024-11-16 06:33:38,476 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2024-11-16 06:33:38,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 31 [2024-11-16 06:33:38,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 06:33:38,491 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2024-11-16 06:33:38,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2024-11-16 06:33:38,650 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-16 06:33:38,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2024-11-16 06:33:38,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 06:33:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:38,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:33:38,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:38,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-16 06:33:38,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:38,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-16 06:33:38,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:38,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 53 [2024-11-16 06:33:38,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:38,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 258 treesize of output 213 [2024-11-16 06:33:38,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:38,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 149 [2024-11-16 06:33:38,937 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:38,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 767 treesize of output 803 [2024-11-16 06:33:38,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:38,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2659 treesize of output 2538 [2024-11-16 06:33:39,042 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:39,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 345 treesize of output 335 [2024-11-16 06:33:39,070 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:39,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 361 treesize of output 337 [2024-11-16 06:33:39,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 298 treesize of output 290 [2024-11-16 06:33:39,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 321 treesize of output 303 [2024-11-16 06:33:39,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:39,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 302 treesize of output 295 [2024-11-16 06:33:40,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-16 06:33:41,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-16 06:33:41,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-16 06:33:41,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-16 06:33:41,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-16 06:33:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:46,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066602162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:33:46,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:33:46,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-16 06:33:46,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015628250] [2024-11-16 06:33:46,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:33:46,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 06:33:46,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:33:46,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 06:33:46,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2024-11-16 06:33:46,197 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:33:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:33:46,661 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2024-11-16 06:33:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 06:33:46,662 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 06:33:46,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:33:46,662 INFO L225 Difference]: With dead ends: 72 [2024-11-16 06:33:46,662 INFO L226 Difference]: Without dead ends: 68 [2024-11-16 06:33:46,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2024-11-16 06:33:46,663 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 172 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:33:46,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 283 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:33:46,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-16 06:33:46,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 43. [2024-11-16 06:33:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 42 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 06:33:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-11-16 06:33:46,672 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 22 [2024-11-16 06:33:46,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:33:46,673 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-11-16 06:33:46,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:33:46,673 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-11-16 06:33:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 06:33:46,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:33:46,674 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] [2024-11-16 06:33:46,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 06:33:46,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:33:46,874 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:33:46,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:33:46,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1041250321, now seen corresponding path program 1 times [2024-11-16 06:33:46,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:33:46,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433110806] [2024-11-16 06:33:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:46,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:33:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:47,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:33:47,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433110806] [2024-11-16 06:33:47,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433110806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:33:47,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57316042] [2024-11-16 06:33:47,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:47,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:33:47,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:33:47,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:33:47,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:33:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:47,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 06:33:47,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:33:47,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-16 06:33:47,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-16 06:33:47,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-16 06:33:47,324 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-16 06:33:47,339 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-16 06:33:47,340 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-16 06:33:47,360 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-16 06:33:47,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-16 06:33:47,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-16 06:33:47,378 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-16 06:33:47,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-16 06:33:47,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-16 06:33:47,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-16 06:33:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:47,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:33:47,499 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_527 (Array Int Int))) (not (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_527) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 1))) is different from false [2024-11-16 06:33:47,532 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_527 (Array Int Int))) (not (= (select (select (store |c_#memory_int#1| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) v_ArrVal_527) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 1))) is different from false [2024-11-16 06:33:47,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:47,555 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2024-11-16 06:33:47,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:47,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 78 [2024-11-16 06:33:47,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2024-11-16 06:33:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-16 06:33:47,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57316042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:33:47,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:33:47,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-16 06:33:47,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157785444] [2024-11-16 06:33:47,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:33:47,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 06:33:47,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:33:47,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 06:33:47,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=160, Unknown=5, NotChecked=54, Total=272 [2024-11-16 06:33:47,748 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:33:47,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:33:47,971 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2024-11-16 06:33:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 06:33:47,972 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-16 06:33:47,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:33:47,972 INFO L225 Difference]: With dead ends: 85 [2024-11-16 06:33:47,972 INFO L226 Difference]: Without dead ends: 76 [2024-11-16 06:33:47,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=253, Unknown=5, NotChecked=70, Total=420 [2024-11-16 06:33:47,973 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 75 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:33:47,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 215 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 149 Invalid, 0 Unknown, 113 Unchecked, 0.2s Time] [2024-11-16 06:33:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-16 06:33:47,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2024-11-16 06:33:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 56 states have internal predecessors, (68), 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 06:33:47,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2024-11-16 06:33:47,979 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 24 [2024-11-16 06:33:47,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:33:47,979 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2024-11-16 06:33:47,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:33:47,980 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-11-16 06:33:47,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 06:33:47,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:33:47,980 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] [2024-11-16 06:33:47,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 06:33:48,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:33:48,185 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:33:48,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:33:48,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1830220668, now seen corresponding path program 1 times [2024-11-16 06:33:48,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:33:48,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751456813] [2024-11-16 06:33:48,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:48,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:33:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:48,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:33:48,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751456813] [2024-11-16 06:33:48,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751456813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:33:48,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054613678] [2024-11-16 06:33:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:33:48,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:33:48,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:33:48,479 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:33:48,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:33:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:33:48,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-16 06:33:48,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:33:48,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-16 06:33:48,594 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2024-11-16 06:33:48,598 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2024-11-16 06:33:48,610 INFO L349 Elim1Store]: treesize reduction 18, result has 21.7 percent of original size [2024-11-16 06:33:48,610 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2024-11-16 06:33:48,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2024-11-16 06:33:48,619 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-16 06:33:48,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-16 06:33:48,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-16 06:33:48,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2024-11-16 06:33:48,731 INFO L349 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2024-11-16 06:33:48,731 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2024-11-16 06:33:48,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-16 06:33:48,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-11-16 06:33:48,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2024-11-16 06:33:48,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-16 06:33:48,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-16 06:33:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:33:48,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:33:48,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:48,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 42 [2024-11-16 06:33:48,894 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:48,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2024-11-16 06:33:48,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:48,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 49 [2024-11-16 06:33:48,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:48,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 35 [2024-11-16 06:33:49,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-16 06:33:49,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-16 06:33:49,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:49,096 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 124 [2024-11-16 06:33:49,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:49,102 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 124 [2024-11-16 06:33:49,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:49,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 438 treesize of output 353 [2024-11-16 06:33:49,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:49,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 520 treesize of output 555 [2024-11-16 06:33:49,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:49,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 510 treesize of output 515 [2024-11-16 06:33:49,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:49,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 575 treesize of output 561 [2024-11-16 06:33:49,266 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:49,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 508 treesize of output 500 [2024-11-16 06:33:49,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:33:49,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 463 treesize of output 477 [2024-11-16 06:34:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:34:02,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054613678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:34:02,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:34:02,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 16 [2024-11-16 06:34:02,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044294166] [2024-11-16 06:34:02,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:34:02,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 06:34:02,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:34:02,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 06:34:02,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=176, Unknown=13, NotChecked=0, Total=240 [2024-11-16 06:34:02,662 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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 06:34:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:34:03,197 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions. [2024-11-16 06:34:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 06:34:03,197 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-16 06:34:03,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:34:03,198 INFO L225 Difference]: With dead ends: 103 [2024-11-16 06:34:03,198 INFO L226 Difference]: Without dead ends: 81 [2024-11-16 06:34:03,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=355, Unknown=19, NotChecked=0, Total=462 [2024-11-16 06:34:03,199 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 108 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 18 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:34:03,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 241 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 237 Invalid, 19 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 06:34:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-16 06:34:03,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 59. [2024-11-16 06:34:03,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 58 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:34:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2024-11-16 06:34:03,204 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 26 [2024-11-16 06:34:03,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:34:03,205 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2024-11-16 06:34:03,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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 06:34:03,205 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2024-11-16 06:34:03,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 06:34:03,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:34:03,205 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:34:03,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 06:34:03,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:34:03,409 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:34:03,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:34:03,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2074223215, now seen corresponding path program 2 times [2024-11-16 06:34:03,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:34:03,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823360918] [2024-11-16 06:34:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:34:03,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:34:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:34:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:34:03,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:34:03,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823360918] [2024-11-16 06:34:03,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823360918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:34:03,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918110678] [2024-11-16 06:34:03,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:34:03,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:34:03,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:34:03,834 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:34:03,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 06:34:03,927 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:34:03,927 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:34:03,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-16 06:34:03,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:34:03,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-16 06:34:04,017 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2024-11-16 06:34:04,020 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2024-11-16 06:34:04,034 INFO L349 Elim1Store]: treesize reduction 18, result has 21.7 percent of original size [2024-11-16 06:34:04,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2024-11-16 06:34:04,056 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-16 06:34:04,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-16 06:34:04,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-16 06:34:04,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2024-11-16 06:34:04,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2024-11-16 06:34:04,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-16 06:34:04,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 06:34:04,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 06:34:04,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2024-11-16 06:34:04,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 06:34:04,168 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-11-16 06:34:04,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 51 [2024-11-16 06:34:04,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 06:34:04,187 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2024-11-16 06:34:04,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2024-11-16 06:34:04,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2024-11-16 06:34:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:34:04,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:34:04,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:34:04,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 65 [2024-11-16 06:34:04,461 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:34:04,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2024-11-16 06:34:04,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:34:04,613 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 162 [2024-11-16 06:34:04,681 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:34:04,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 4022 treesize of output 2644 [2024-11-16 06:34:04,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:34:04,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1362 treesize of output 1308 [2024-11-16 06:34:04,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:34:04,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1201 treesize of output 1123 [2024-11-16 06:34:04,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:34:04,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1374 treesize of output 1326 [2024-11-16 06:34:04,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:34:04,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1127 treesize of output 1130 [2024-11-16 06:34:06,831 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-16 06:34:06,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 14 treesize of output 31 [2024-11-16 06:35:02,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-16 06:35:10,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4