./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_length_check-2.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/list-ext3-properties/sll_length_check-2.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 0b1cf2dd5b4da09460afcca66f285dbd0591f4fa3369eb070fcfcc2c1d99d315 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:39:20,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:39:21,025 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:39:21,039 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:39:21,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:39:21,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:39:21,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:39:21,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:39:21,059 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:39:21,059 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:39:21,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:39:21,060 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:39:21,060 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:39:21,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:39:21,061 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:39:21,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:39:21,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:39:21,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:39:21,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:39:21,062 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:39:21,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:39:21,063 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:39:21,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:39:21,063 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:39:21,063 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:39:21,064 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:39:21,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:39:21,064 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:39:21,064 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:39:21,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:39:21,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:39:21,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:39:21,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:39:21,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:39:21,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:39:21,066 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:39:21,066 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:39:21,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:39:21,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:39:21,067 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:39:21,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:39:21,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:39:21,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b1cf2dd5b4da09460afcca66f285dbd0591f4fa3369eb070fcfcc2c1d99d315 [2024-11-16 06:39:21,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:39:21,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:39:21,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:39:21,276 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:39:21,276 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:39:21,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i [2024-11-16 06:39:22,517 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:39:22,698 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:39:22,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i [2024-11-16 06:39:22,711 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35ec27fe9/7b4ce7fd07994d2d8e0883808c3b41c6/FLAGddfb72b01 [2024-11-16 06:39:23,067 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35ec27fe9/7b4ce7fd07994d2d8e0883808c3b41c6 [2024-11-16 06:39:23,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:39:23,070 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:39:23,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:39:23,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:39:23,076 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:39:23,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63be77d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23, skipping insertion in model container [2024-11-16 06:39:23,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:39:23,310 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/list-ext3-properties/sll_length_check-2.i[23814,23827] [2024-11-16 06:39:23,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:39:23,324 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:39:23,370 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/list-ext3-properties/sll_length_check-2.i[23814,23827] [2024-11-16 06:39:23,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:39:23,399 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:39:23,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23 WrapperNode [2024-11-16 06:39:23,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:39:23,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:39:23,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:39:23,401 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:39:23,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,416 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,433 INFO L138 Inliner]: procedures = 125, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 85 [2024-11-16 06:39:23,434 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:39:23,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:39:23,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:39:23,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:39:23,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,448 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,460 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-16 06:39:23,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,466 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:39:23,472 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:39:23,472 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:39:23,472 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:39:23,473 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (1/1) ... [2024-11-16 06:39:23,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:39:23,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:39:23,510 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 06:39:23,513 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 06:39:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 06:39:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:39:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 06:39:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 06:39:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 06:39:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 06:39:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 06:39:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:39:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 06:39:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:39:23,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:39:23,655 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:39:23,657 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:39:23,780 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint myexit_returnLabel#1: assume true;havoc myexit_~s#1;havoc myexit_#in~s#1;assume { :end_inline_myexit } true; [2024-11-16 06:39:23,789 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-16 06:39:23,790 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:39:23,802 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:39:23,802 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:39:23,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:39:23 BoogieIcfgContainer [2024-11-16 06:39:23,803 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:39:23,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:39:23,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:39:23,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:39:23,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:39:23" (1/3) ... [2024-11-16 06:39:23,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611afa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:39:23, skipping insertion in model container [2024-11-16 06:39:23,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:39:23" (2/3) ... [2024-11-16 06:39:23,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611afa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:39:23, skipping insertion in model container [2024-11-16 06:39:23,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:39:23" (3/3) ... [2024-11-16 06:39:23,810 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_length_check-2.i [2024-11-16 06:39:23,821 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:39:23,821 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:39:23,858 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:39:23,863 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;@7527cb8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:39:23,863 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:39:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 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 06:39:23,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 06:39:23,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:23,874 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:39:23,874 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:23,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:23,879 INFO L85 PathProgramCache]: Analyzing trace with hash -49745978, now seen corresponding path program 1 times [2024-11-16 06:39:23,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:23,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354674964] [2024-11-16 06:39:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:23,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:23,995 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 06:39:23,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:23,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354674964] [2024-11-16 06:39:23,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354674964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:39:23,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:39:23,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:39:23,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675572995] [2024-11-16 06:39:24,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:39:24,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:39:24,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:24,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:39:24,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:39:24,023 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 06:39:24,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:39:24,034 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2024-11-16 06:39:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:39:24,035 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2024-11-16 06:39:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:39:24,040 INFO L225 Difference]: With dead ends: 50 [2024-11-16 06:39:24,040 INFO L226 Difference]: Without dead ends: 20 [2024-11-16 06:39:24,042 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 06:39:24,044 INFO L432 NwaCegarLoop]: 32 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, 32 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 06:39:24,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:39:24,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-16 06:39:24,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-16 06:39:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-16 06:39:24,086 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2024-11-16 06:39:24,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:39:24,089 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-16 06:39:24,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 06:39:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-16 06:39:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-16 06:39:24,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:24,100 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:39:24,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:39:24,100 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:24,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:24,101 INFO L85 PathProgramCache]: Analyzing trace with hash -944963075, now seen corresponding path program 1 times [2024-11-16 06:39:24,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:24,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227899973] [2024-11-16 06:39:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:24,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:24,234 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 06:39:24,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227899973] [2024-11-16 06:39:24,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227899973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:39:24,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:39:24,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 06:39:24,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823425400] [2024-11-16 06:39:24,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:39:24,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:39:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:39:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:39:24,237 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:24,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:39:24,281 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2024-11-16 06:39:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:39:24,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-16 06:39:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:39:24,282 INFO L225 Difference]: With dead ends: 49 [2024-11-16 06:39:24,282 INFO L226 Difference]: Without dead ends: 39 [2024-11-16 06:39:24,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:39:24,283 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:39:24,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 68 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:39:24,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-16 06:39:24,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2024-11-16 06:39:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:24,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-16 06:39:24,292 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2024-11-16 06:39:24,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:39:24,293 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-16 06:39:24,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-16 06:39:24,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 06:39:24,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:24,294 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 06:39:24,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:39:24,294 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:24,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:24,296 INFO L85 PathProgramCache]: Analyzing trace with hash 874828012, now seen corresponding path program 1 times [2024-11-16 06:39:24,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:24,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031647828] [2024-11-16 06:39:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:24,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:39:24,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:24,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031647828] [2024-11-16 06:39:24,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031647828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:39:24,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739765558] [2024-11-16 06:39:24,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:24,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:24,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:39:24,407 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 06:39:24,407 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 06:39:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:24,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 06:39:24,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:39:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:39:24,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:39:24,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739765558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:39:24,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:39:24,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-16 06:39:24,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449571461] [2024-11-16 06:39:24,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:39:24,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:39:24,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:24,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:39:24,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:39:24,522 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:24,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:39:24,576 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2024-11-16 06:39:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:39:24,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-16 06:39:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:39:24,578 INFO L225 Difference]: With dead ends: 51 [2024-11-16 06:39:24,578 INFO L226 Difference]: Without dead ends: 41 [2024-11-16 06:39:24,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:39:24,579 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 35 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:39:24,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 76 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:39:24,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-16 06:39:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 22. [2024-11-16 06:39:24,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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 06:39:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-16 06:39:24,583 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 20 [2024-11-16 06:39:24,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:39:24,583 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-16 06:39:24,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-16 06:39:24,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 06:39:24,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:24,585 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 06:39:24,599 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 06:39:24,789 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 06:39:24,790 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:24,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:24,791 INFO L85 PathProgramCache]: Analyzing trace with hash -825690653, now seen corresponding path program 1 times [2024-11-16 06:39:24,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:24,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147442510] [2024-11-16 06:39:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:24,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:24,882 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 06:39:24,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:24,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147442510] [2024-11-16 06:39:24,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147442510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:39:24,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476818756] [2024-11-16 06:39:24,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:24,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:24,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:39:24,885 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 06:39:24,886 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 06:39:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:24,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 06:39:24,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:39:24,989 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 06:39:24,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:39:25,032 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 06:39:25,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476818756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:39:25,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:39:25,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-16 06:39:25,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78471464] [2024-11-16 06:39:25,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:39:25,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:39:25,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:25,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:39:25,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:39:25,034 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 06:39:25,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:39:25,115 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2024-11-16 06:39:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:39:25,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 06:39:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:39:25,116 INFO L225 Difference]: With dead ends: 57 [2024-11-16 06:39:25,117 INFO L226 Difference]: Without dead ends: 47 [2024-11-16 06:39:25,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:39:25,118 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 44 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:39:25,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 67 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:39:25,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-16 06:39:25,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26. [2024-11-16 06:39:25,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-16 06:39:25,123 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2024-11-16 06:39:25,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:39:25,123 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-16 06:39:25,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 06:39:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-16 06:39:25,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-16 06:39:25,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:25,125 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:39:25,137 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 06:39:25,325 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 06:39:25,326 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:25,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1029473993, now seen corresponding path program 2 times [2024-11-16 06:39:25,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:25,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781722919] [2024-11-16 06:39:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:25,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:39:25,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:25,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781722919] [2024-11-16 06:39:25,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781722919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:39:25,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:39:25,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 06:39:25,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482456034] [2024-11-16 06:39:25,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:39:25,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 06:39:25,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:25,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 06:39:25,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:39:25,482 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:25,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:39:25,522 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2024-11-16 06:39:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 06:39:25,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-16 06:39:25,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:39:25,523 INFO L225 Difference]: With dead ends: 34 [2024-11-16 06:39:25,523 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 06:39:25,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:39:25,524 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:39:25,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 90 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:39:25,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 06:39:25,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-16 06:39:25,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-16 06:39:25,531 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 25 [2024-11-16 06:39:25,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:39:25,531 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-16 06:39:25,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-16 06:39:25,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 06:39:25,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:25,534 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:39:25,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 06:39:25,534 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:25,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:25,535 INFO L85 PathProgramCache]: Analyzing trace with hash 934796650, now seen corresponding path program 1 times [2024-11-16 06:39:25,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:25,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340181526] [2024-11-16 06:39:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:25,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:39:25,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:25,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340181526] [2024-11-16 06:39:25,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340181526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:39:25,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309640814] [2024-11-16 06:39:25,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:25,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:25,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:39:25,726 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 06:39:25,727 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 06:39:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:25,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-16 06:39:25,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:39:25,855 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 15 treesize of output 1 [2024-11-16 06:39:25,926 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 06:39:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:39:25,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:39:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:39:25,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309640814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:39:25,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:39:25,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 12 [2024-11-16 06:39:25,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269511110] [2024-11-16 06:39:25,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:39:25,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 06:39:25,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:25,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 06:39:25,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-16 06:39:25,965 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:26,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:39:26,046 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-11-16 06:39:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 06:39:26,047 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-16 06:39:26,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:39:26,047 INFO L225 Difference]: With dead ends: 38 [2024-11-16 06:39:26,047 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 06:39:26,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-16 06:39:26,048 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:39:26,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 143 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:39:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 06:39:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-16 06:39:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-16 06:39:26,052 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 27 [2024-11-16 06:39:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:39:26,052 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-16 06:39:26,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-16 06:39:26,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 06:39:26,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:26,053 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:39:26,066 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 06:39:26,256 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 06:39:26,257 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:26,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash 144183243, now seen corresponding path program 2 times [2024-11-16 06:39:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:26,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667060971] [2024-11-16 06:39:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:26,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:39:26,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:26,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667060971] [2024-11-16 06:39:26,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667060971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:39:26,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316087346] [2024-11-16 06:39:26,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:39:26,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:39:26,411 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 06:39:26,413 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 06:39:26,479 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:39:26,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:39:26,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 06:39:26,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:39:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:39:26,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:39:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:39:26,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316087346] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:39:26,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:39:26,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-16 06:39:26,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331187667] [2024-11-16 06:39:26,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:39:26,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 06:39:26,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:26,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 06:39:26,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:39:26,584 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:39:26,634 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2024-11-16 06:39:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:39:26,635 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-16 06:39:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:39:26,635 INFO L225 Difference]: With dead ends: 63 [2024-11-16 06:39:26,635 INFO L226 Difference]: Without dead ends: 57 [2024-11-16 06:39:26,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:39:26,636 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:39:26,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:39:26,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-16 06:39:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2024-11-16 06:39:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 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 06:39:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-11-16 06:39:26,641 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 29 [2024-11-16 06:39:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:39:26,641 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-11-16 06:39:26,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-11-16 06:39:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-16 06:39:26,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:26,642 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:39:26,655 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 06:39:26,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:26,848 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:26,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash 573910508, now seen corresponding path program 3 times [2024-11-16 06:39:26,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:26,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116515313] [2024-11-16 06:39:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:26,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:39:27,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:27,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116515313] [2024-11-16 06:39:27,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116515313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:39:27,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226743321] [2024-11-16 06:39:27,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:39:27,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:27,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:39:27,197 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 06:39:27,198 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 06:39:27,260 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 06:39:27,260 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:39:27,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-16 06:39:27,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:39:27,272 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 06:39:27,301 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 06:39:27,306 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 06:39:27,345 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-16 06:39:27,346 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 11 treesize of output 11 [2024-11-16 06:39:27,385 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 27 treesize of output 15 [2024-11-16 06:39:27,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-16 06:39:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:39:27,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:39:31,682 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0)) (= (select (select (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| (store (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.base|)) |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|) 0))) (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| Int)) (or (= (select (select (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| (store (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|) 0) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0))))) is different from false [2024-11-16 06:39:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-16 06:39:31,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226743321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:39:31,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:39:31,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-11-16 06:39:31,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537479471] [2024-11-16 06:39:31,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:39:31,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 06:39:31,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 06:39:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=331, Unknown=1, NotChecked=36, Total=420 [2024-11-16 06:39:31,856 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 21 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 06:39:35,921 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0)) (= (select (select (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| (store (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.base|)) |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|) 0))) (= (select |c_#valid| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 1) (= (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 0) 0) (= (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 0) 0) (= |c_ULTIMATE.start_sll_create_~head~0#1.offset| 0) (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| Int)) (or (= (select (select (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| (store (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|) 0) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0))))) is different from false [2024-11-16 06:39:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:39:36,041 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2024-11-16 06:39:36,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 06:39:36,041 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 21 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 31 [2024-11-16 06:39:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:39:36,042 INFO L225 Difference]: With dead ends: 84 [2024-11-16 06:39:36,042 INFO L226 Difference]: Without dead ends: 68 [2024-11-16 06:39:36,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=54, Invalid=332, Unknown=2, NotChecked=74, Total=462 [2024-11-16 06:39:36,043 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:39:36,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 337 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 59 Unchecked, 0.2s Time] [2024-11-16 06:39:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-16 06:39:36,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2024-11-16 06:39:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.126984126984127) internal successors, (71), 63 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:36,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2024-11-16 06:39:36,049 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 31 [2024-11-16 06:39:36,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:39:36,050 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2024-11-16 06:39:36,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 21 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 06:39:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2024-11-16 06:39:36,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-16 06:39:36,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:36,051 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:39:36,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 06:39:36,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:36,252 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:36,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1776422854, now seen corresponding path program 1 times [2024-11-16 06:39:36,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:36,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036280795] [2024-11-16 06:39:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:36,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:39:36,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:36,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036280795] [2024-11-16 06:39:36,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036280795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:39:36,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770146324] [2024-11-16 06:39:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:36,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:36,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:39:36,338 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 06:39:36,339 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 06:39:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:36,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:39:36,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:39:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:39:36,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:39:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:39:36,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770146324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:39:36,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:39:36,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-11-16 06:39:36,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630146778] [2024-11-16 06:39:36,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:39:36,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 06:39:36,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:36,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 06:39:36,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-16 06:39:36,492 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:36,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:39:36,573 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2024-11-16 06:39:36,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 06:39:36,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-16 06:39:36,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:39:36,574 INFO L225 Difference]: With dead ends: 79 [2024-11-16 06:39:36,576 INFO L226 Difference]: Without dead ends: 65 [2024-11-16 06:39:36,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:39:36,580 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 49 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:39:36,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 119 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:39:36,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-16 06:39:36,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2024-11-16 06:39:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 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 06:39:36,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-11-16 06:39:36,589 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 32 [2024-11-16 06:39:36,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:39:36,590 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-11-16 06:39:36,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:36,590 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-11-16 06:39:36,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-16 06:39:36,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:36,592 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:39:36,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 06:39:36,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:36,793 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:36,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:36,793 INFO L85 PathProgramCache]: Analyzing trace with hash 520968018, now seen corresponding path program 4 times [2024-11-16 06:39:36,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:36,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647074414] [2024-11-16 06:39:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:36,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:39:36,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647074414] [2024-11-16 06:39:36,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647074414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:39:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029443384] [2024-11-16 06:39:36,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:39:36,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:36,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:39:36,871 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 06:39:36,872 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 06:39:36,934 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:39:36,934 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:39:36,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:39:36,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:39:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:39:36,972 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:39:36,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029443384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:39:36,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:39:36,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-16 06:39:36,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681982292] [2024-11-16 06:39:36,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:39:36,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 06:39:36,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:36,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 06:39:36,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-16 06:39:36,976 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 06:39:37,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:39:37,022 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2024-11-16 06:39:37,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:39:37,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-16 06:39:37,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:39:37,023 INFO L225 Difference]: With dead ends: 68 [2024-11-16 06:39:37,023 INFO L226 Difference]: Without dead ends: 37 [2024-11-16 06:39:37,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:39:37,024 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:39:37,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 75 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:39:37,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-16 06:39:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-16 06:39:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:39:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-16 06:39:37,028 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 35 [2024-11-16 06:39:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:39:37,028 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-16 06:39:37,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 06:39:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-16 06:39:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 06:39:37,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:37,029 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:39:37,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 06:39:37,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:37,236 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:37,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:37,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2050397280, now seen corresponding path program 2 times [2024-11-16 06:39:37,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:37,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379863680] [2024-11-16 06:39:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:37,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:37,524 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 06:39:37,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:37,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379863680] [2024-11-16 06:39:37,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379863680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:39:37,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061835303] [2024-11-16 06:39:37,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:39:37,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:37,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:39:37,529 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:39:37,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 06:39:37,598 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:39:37,599 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:39:37,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-16 06:39:37,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:39:37,617 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 06:39:37,651 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 15 treesize of output 1 [2024-11-16 06:39:37,691 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-16 06:39:37,692 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 11 treesize of output 11 [2024-11-16 06:39:37,733 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 28 treesize of output 16 [2024-11-16 06:39:37,739 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 06:39:37,852 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 7 treesize of output 3 [2024-11-16 06:39:37,899 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-16 06:39:37,899 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 32 treesize of output 15 [2024-11-16 06:39:37,904 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 06:39:37,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:39:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 06:39:38,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061835303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:39:38,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:39:38,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-11-16 06:39:38,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073188288] [2024-11-16 06:39:38,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:39:38,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 06:39:38,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 06:39:38,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2024-11-16 06:39:38,107 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 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 06:39:38,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:39:38,364 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2024-11-16 06:39:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 06:39:38,364 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 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) Word has length 36 [2024-11-16 06:39:38,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:39:38,365 INFO L225 Difference]: With dead ends: 47 [2024-11-16 06:39:38,365 INFO L226 Difference]: Without dead ends: 41 [2024-11-16 06:39:38,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2024-11-16 06:39:38,366 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:39:38,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 351 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:39:38,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-16 06:39:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2024-11-16 06:39:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 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 06:39:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-16 06:39:38,373 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 36 [2024-11-16 06:39:38,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:39:38,373 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-16 06:39:38,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 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 06:39:38,373 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-16 06:39:38,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 06:39:38,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:38,374 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:39:38,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 06:39:38,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 06:39:38,575 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:38,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash 410970241, now seen corresponding path program 3 times [2024-11-16 06:39:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:38,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360990071] [2024-11-16 06:39:38,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:38,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 06:39:38,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:38,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360990071] [2024-11-16 06:39:38,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360990071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:39:38,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681467396] [2024-11-16 06:39:38,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:39:38,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:38,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:39:38,696 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:39:38,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 06:39:38,769 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 06:39:38,769 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:39:38,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 06:39:38,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:39:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 06:39:38,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:39:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 06:39:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681467396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:39:38,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:39:38,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-11-16 06:39:38,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586685448] [2024-11-16 06:39:38,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:39:38,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 06:39:38,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:38,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 06:39:38,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:39:38,950 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 06:39:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:39:39,035 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2024-11-16 06:39:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 06:39:39,036 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 38 [2024-11-16 06:39:39,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:39:39,036 INFO L225 Difference]: With dead ends: 78 [2024-11-16 06:39:39,036 INFO L226 Difference]: Without dead ends: 72 [2024-11-16 06:39:39,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:39:39,037 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:39:39,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 206 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:39:39,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-16 06:39:39,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2024-11-16 06:39:39,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 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 06:39:39,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2024-11-16 06:39:39,050 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 38 [2024-11-16 06:39:39,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:39:39,050 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2024-11-16 06:39:39,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 06:39:39,050 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2024-11-16 06:39:39,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 06:39:39,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:39:39,051 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:39:39,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 06:39:39,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:39,251 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:39:39,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:39:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash -741822174, now seen corresponding path program 4 times [2024-11-16 06:39:39,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:39:39,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636262926] [2024-11-16 06:39:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:39:39,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:39:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:39:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 06:39:39,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:39:39,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636262926] [2024-11-16 06:39:39,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636262926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:39:39,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788162401] [2024-11-16 06:39:39,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:39:39,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:39:39,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:39:39,974 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:39:39,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 06:39:40,044 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:39:40,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:39:40,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-16 06:39:40,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:39:40,064 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 06:39:40,104 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 06:39:40,111 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 06:39:40,166 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-16 06:39:40,166 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 17 treesize of output 21 [2024-11-16 06:39:40,228 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 27 treesize of output 15 [2024-11-16 06:39:40,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-16 06:39:40,314 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2024-11-16 06:39:40,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-16 06:39:40,383 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2024-11-16 06:39:40,383 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 74 treesize of output 44 [2024-11-16 06:39:40,391 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 38 treesize of output 40 [2024-11-16 06:39:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 06:39:40,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:39:44,990 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_46| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_46|) 0)) (= (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_46| (store (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_46|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.offset|)))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_46| (store (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_46|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.base|)) |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|))) 0))) (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_46| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_46|) 0)) (= (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_46| (store (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_46|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.base|)))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_46| (store (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_46|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) 0)))) is different from false [2024-11-16 06:39:50,661 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 06:39:50,663 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 2238 treesize of output 2110 [2024-11-16 06:39:50,676 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 06:39:50,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:39:50,905 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 9472 treesize of output 8456 [2024-11-16 06:39:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 6 not checked. [2024-11-16 06:39:51,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788162401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:39:51,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:39:51,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 36 [2024-11-16 06:39:51,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918253836] [2024-11-16 06:39:51,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:39:51,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-16 06:39:51,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:39:51,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-16 06:39:51,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1094, Unknown=2, NotChecked=66, Total=1260 [2024-11-16 06:39:51,546 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)