./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrncat-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/cstrncat-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d8697c629a22dee8b5a51c26261db89d3e1115a5e0c1bc03fd54c09ffc3b9b0d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 14:58:47,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 14:58:47,285 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 14:58:47,289 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 14:58:47,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 14:58:47,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 14:58:47,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 14:58:47,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 14:58:47,322 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 14:58:47,323 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 14:58:47,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 14:58:47,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 14:58:47,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 14:58:47,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 14:58:47,325 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 14:58:47,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 14:58:47,326 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 14:58:47,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 14:58:47,326 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 14:58:47,327 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 14:58:47,327 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 14:58:47,331 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 14:58:47,331 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 14:58:47,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 14:58:47,332 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 14:58:47,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 14:58:47,334 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 14:58:47,335 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 14:58:47,335 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 14:58:47,335 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 14:58:47,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 14:58:47,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 14:58:47,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 14:58:47,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:58:47,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 14:58:47,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 14:58:47,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 14:58:47,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 14:58:47,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 14:58:47,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 14:58:47,338 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 14:58:47,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 14:58:47,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8697c629a22dee8b5a51c26261db89d3e1115a5e0c1bc03fd54c09ffc3b9b0d [2024-11-10 14:58:47,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 14:58:47,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 14:58:47,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 14:58:47,638 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 14:58:47,638 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 14:58:47,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrncat-alloca-2.i [2024-11-10 14:58:48,958 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 14:58:49,176 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 14:58:49,177 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrncat-alloca-2.i [2024-11-10 14:58:49,189 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/305f99323/3daf3587b81141b385c512bb0a799a9d/FLAG16b526630 [2024-11-10 14:58:49,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/305f99323/3daf3587b81141b385c512bb0a799a9d [2024-11-10 14:58:49,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 14:58:49,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 14:58:49,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 14:58:49,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 14:58:49,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 14:58:49,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58aa946d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49, skipping insertion in model container [2024-11-10 14:58:49,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,249 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 14:58:49,554 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 14:58:49,555 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 14:58:49,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:58:49,574 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 14:58:49,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:58:49,644 INFO L204 MainTranslator]: Completed translation [2024-11-10 14:58:49,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49 WrapperNode [2024-11-10 14:58:49,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 14:58:49,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 14:58:49,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 14:58:49,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 14:58:49,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,666 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,685 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2024-11-10 14:58:49,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 14:58:49,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 14:58:49,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 14:58:49,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 14:58:49,697 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,701 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,716 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [6, 3]. 67 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 6 writes are split as follows [4, 2]. [2024-11-10 14:58:49,716 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,722 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 14:58:49,732 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 14:58:49,732 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 14:58:49,732 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 14:58:49,733 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (1/1) ... [2024-11-10 14:58:49,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:58:49,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:49,801 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) [2024-11-10 14:58:49,803 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 [2024-11-10 14:58:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 14:58:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 14:58:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 14:58:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 14:58:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 14:58:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 14:58:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 14:58:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 14:58:49,954 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 14:58:49,956 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 14:58:50,240 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L541: call ULTIMATE.dealloc(main_#t~malloc13#1.base, main_#t~malloc13#1.offset);havoc main_#t~malloc13#1.base, main_#t~malloc13#1.offset;call ULTIMATE.dealloc(main_#t~malloc14#1.base, main_#t~malloc14#1.offset);havoc main_#t~malloc14#1.base, main_#t~malloc14#1.offset; [2024-11-10 14:58:50,266 INFO L? ?]: Removed 69 outVars from TransFormulas that were not future-live. [2024-11-10 14:58:50,267 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 14:58:50,278 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 14:58:50,278 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 14:58:50,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:58:50 BoogieIcfgContainer [2024-11-10 14:58:50,279 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 14:58:50,281 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 14:58:50,281 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 14:58:50,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 14:58:50,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:58:49" (1/3) ... [2024-11-10 14:58:50,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14902d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:58:50, skipping insertion in model container [2024-11-10 14:58:50,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:49" (2/3) ... [2024-11-10 14:58:50,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14902d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:58:50, skipping insertion in model container [2024-11-10 14:58:50,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:58:50" (3/3) ... [2024-11-10 14:58:50,290 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncat-alloca-2.i [2024-11-10 14:58:50,306 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 14:58:50,306 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-11-10 14:58:50,344 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:58:50,351 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=None, 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;@3c21f634, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:58:50,351 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-10 14:58:50,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 56 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 14:58:50,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:50,362 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:50,363 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:50,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:50,368 INFO L85 PathProgramCache]: Analyzing trace with hash 606173177, now seen corresponding path program 1 times [2024-11-10 14:58:50,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:50,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064378517] [2024-11-10 14:58:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:50,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:50,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:50,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064378517] [2024-11-10 14:58:50,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064378517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:50,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:50,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:58:50,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044388700] [2024-11-10 14:58:50,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:50,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:58:50,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:50,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:58:50,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:50,601 INFO L87 Difference]: Start difference. First operand has 57 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 56 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:50,676 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2024-11-10 14:58:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:58:50,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-10 14:58:50,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:50,686 INFO L225 Difference]: With dead ends: 59 [2024-11-10 14:58:50,687 INFO L226 Difference]: Without dead ends: 54 [2024-11-10 14:58:50,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:50,692 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 4 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:50,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 97 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:50,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-10 14:58:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-10 14:58:50,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 53 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) [2024-11-10 14:58:50,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-10 14:58:50,731 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 8 [2024-11-10 14:58:50,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:50,732 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-10 14:58:50,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:50,733 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-10 14:58:50,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 14:58:50,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:50,734 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:50,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 14:58:50,735 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:50,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:50,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1611623427, now seen corresponding path program 1 times [2024-11-10 14:58:50,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:50,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490707660] [2024-11-10 14:58:50,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:50,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:50,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:50,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490707660] [2024-11-10 14:58:50,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490707660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:50,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:50,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:58:50,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984659770] [2024-11-10 14:58:50,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:50,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:58:50,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:50,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:58:50,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:50,971 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:51,026 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2024-11-10 14:58:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:58:51,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-10 14:58:51,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:51,029 INFO L225 Difference]: With dead ends: 52 [2024-11-10 14:58:51,029 INFO L226 Difference]: Without dead ends: 52 [2024-11-10 14:58:51,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:51,032 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:51,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 75 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:51,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-10 14:58:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-10 14:58:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2024-11-10 14:58:51,041 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 9 [2024-11-10 14:58:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:51,042 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2024-11-10 14:58:51,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2024-11-10 14:58:51,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 14:58:51,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:51,043 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:51,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 14:58:51,043 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:51,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1611623428, now seen corresponding path program 1 times [2024-11-10 14:58:51,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:51,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845139141] [2024-11-10 14:58:51,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:51,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:51,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:51,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845139141] [2024-11-10 14:58:51,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845139141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:51,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:51,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:58:51,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797927519] [2024-11-10 14:58:51,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:51,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:58:51,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:51,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:58:51,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:58:51,377 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:51,495 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-11-10 14:58:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:58:51,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-10 14:58:51,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:51,496 INFO L225 Difference]: With dead ends: 56 [2024-11-10 14:58:51,496 INFO L226 Difference]: Without dead ends: 56 [2024-11-10 14:58:51,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-10 14:58:51,498 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 23 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:51,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 162 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-10 14:58:51,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2024-11-10 14:58:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.6842105263157894) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-10 14:58:51,509 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 9 [2024-11-10 14:58:51,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:51,510 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-10 14:58:51,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,510 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-10 14:58:51,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 14:58:51,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:51,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:51,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 14:58:51,511 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:51,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:51,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1567768078, now seen corresponding path program 1 times [2024-11-10 14:58:51,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:51,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131579022] [2024-11-10 14:58:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:51,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:51,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:51,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131579022] [2024-11-10 14:58:51,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131579022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:51,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:51,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 14:58:51,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191021810] [2024-11-10 14:58:51,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:51,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:58:51,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:51,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:58:51,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:51,576 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:51,597 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2024-11-10 14:58:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:58:51,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-10 14:58:51,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:51,598 INFO L225 Difference]: With dead ends: 73 [2024-11-10 14:58:51,599 INFO L226 Difference]: Without dead ends: 73 [2024-11-10 14:58:51,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:51,600 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 10 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:51,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 119 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:51,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-10 14:58:51,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2024-11-10 14:58:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.6) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2024-11-10 14:58:51,606 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 12 [2024-11-10 14:58:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:51,606 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2024-11-10 14:58:51,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,607 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2024-11-10 14:58:51,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 14:58:51,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:51,607 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:51,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 14:58:51,608 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:51,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash 919744755, now seen corresponding path program 1 times [2024-11-10 14:58:51,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:51,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285413545] [2024-11-10 14:58:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:51,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:51,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:51,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285413545] [2024-11-10 14:58:51,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285413545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:51,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:51,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:58:51,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498805527] [2024-11-10 14:58:51,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:51,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:58:51,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:51,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:58:51,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:51,655 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:51,696 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2024-11-10 14:58:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:58:51,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-10 14:58:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:51,698 INFO L225 Difference]: With dead ends: 65 [2024-11-10 14:58:51,699 INFO L226 Difference]: Without dead ends: 65 [2024-11-10 14:58:51,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:51,701 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:51,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 75 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-10 14:58:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-10 14:58:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.56) internal successors, (78), 64 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2024-11-10 14:58:51,709 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 12 [2024-11-10 14:58:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:51,710 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2024-11-10 14:58:51,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2024-11-10 14:58:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 14:58:51,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:51,714 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:51,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 14:58:51,715 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:51,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:51,715 INFO L85 PathProgramCache]: Analyzing trace with hash 919744756, now seen corresponding path program 1 times [2024-11-10 14:58:51,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:51,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729743017] [2024-11-10 14:58:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:51,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:51,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:51,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729743017] [2024-11-10 14:58:51,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729743017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:51,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:51,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:58:51,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874680415] [2024-11-10 14:58:51,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:51,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 14:58:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:51,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 14:58:51,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:58:51,797 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:51,855 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2024-11-10 14:58:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:58:51,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-10 14:58:51,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:51,856 INFO L225 Difference]: With dead ends: 75 [2024-11-10 14:58:51,856 INFO L226 Difference]: Without dead ends: 75 [2024-11-10 14:58:51,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:58:51,857 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 21 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:51,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 140 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:51,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-10 14:58:51,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2024-11-10 14:58:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.56) internal successors, (78), 64 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2024-11-10 14:58:51,862 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 12 [2024-11-10 14:58:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:51,862 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2024-11-10 14:58:51,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,863 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2024-11-10 14:58:51,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-10 14:58:51,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:51,863 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:51,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 14:58:51,864 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:51,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:51,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1356172130, now seen corresponding path program 1 times [2024-11-10 14:58:51,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:51,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257620260] [2024-11-10 14:58:51,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:51,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:52,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:52,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257620260] [2024-11-10 14:58:52,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257620260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:52,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:52,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:58:52,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523822178] [2024-11-10 14:58:52,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:52,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:58:52,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:52,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:58:52,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:58:52,122 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2024-11-10 14:58:52,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:52,313 INFO L93 Difference]: Finished difference Result 101 states and 122 transitions. [2024-11-10 14:58:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:58:52,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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 [2024-11-10 14:58:52,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:52,315 INFO L225 Difference]: With dead ends: 101 [2024-11-10 14:58:52,315 INFO L226 Difference]: Without dead ends: 101 [2024-11-10 14:58:52,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 14:58:52,316 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 42 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:52,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 151 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-10 14:58:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 76. [2024-11-10 14:58:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 75 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2024-11-10 14:58:52,326 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 13 [2024-11-10 14:58:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:52,326 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2024-11-10 14:58:52,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2024-11-10 14:58:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2024-11-10 14:58:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-10 14:58:52,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:52,329 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:52,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 14:58:52,329 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:52,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:52,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1296963354, now seen corresponding path program 1 times [2024-11-10 14:58:52,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:52,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103036991] [2024-11-10 14:58:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:52,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:52,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:52,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103036991] [2024-11-10 14:58:52,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103036991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:52,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124209599] [2024-11-10 14:58:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:52,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:52,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:52,647 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) [2024-11-10 14:58:52,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 14:58:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:52,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 14:58:52,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:52,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 14:58:52,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-10 14:58:52,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-10 14:58:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:53,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:53,326 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 14:58:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:53,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124209599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:53,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:53,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-10 14:58:53,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271858346] [2024-11-10 14:58:53,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:53,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 14:58:53,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:53,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 14:58:53,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-11-10 14:58:53,397 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:53,626 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2024-11-10 14:58:53,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 14:58:53,626 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-10 14:58:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:53,628 INFO L225 Difference]: With dead ends: 81 [2024-11-10 14:58:53,628 INFO L226 Difference]: Without dead ends: 81 [2024-11-10 14:58:53,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2024-11-10 14:58:53,629 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 40 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:53,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 373 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-10 14:58:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2024-11-10 14:58:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 70 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2024-11-10 14:58:53,634 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 13 [2024-11-10 14:58:53,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:53,634 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2024-11-10 14:58:53,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2024-11-10 14:58:53,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-10 14:58:53,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:53,635 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:53,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:53,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:53,841 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:53,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:53,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1131340703, now seen corresponding path program 1 times [2024-11-10 14:58:53,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:53,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415527091] [2024-11-10 14:58:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:53,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:53,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:53,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415527091] [2024-11-10 14:58:53,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415527091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:53,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:53,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:58:53,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135165141] [2024-11-10 14:58:53,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:53,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:58:53,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:53,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:58:53,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:58:53,981 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2024-11-10 14:58:54,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:54,024 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2024-11-10 14:58:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:58:54,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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 [2024-11-10 14:58:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:54,025 INFO L225 Difference]: With dead ends: 70 [2024-11-10 14:58:54,025 INFO L226 Difference]: Without dead ends: 70 [2024-11-10 14:58:54,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-10 14:58:54,026 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 45 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:54,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 81 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-10 14:58:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2024-11-10 14:58:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 58 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2024-11-10 14:58:54,037 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2024-11-10 14:58:54,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:54,037 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2024-11-10 14:58:54,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2024-11-10 14:58:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2024-11-10 14:58:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-10 14:58:54,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:54,038 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:54,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 14:58:54,038 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:54,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:54,039 INFO L85 PathProgramCache]: Analyzing trace with hash 908336912, now seen corresponding path program 1 times [2024-11-10 14:58:54,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:54,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470680694] [2024-11-10 14:58:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:54,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:54,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:54,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470680694] [2024-11-10 14:58:54,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470680694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:54,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:54,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:58:54,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828116141] [2024-11-10 14:58:54,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:54,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:58:54,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:54,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:58:54,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:54,172 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:54,190 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2024-11-10 14:58:54,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:58:54,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-10 14:58:54,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:54,191 INFO L225 Difference]: With dead ends: 65 [2024-11-10 14:58:54,191 INFO L226 Difference]: Without dead ends: 65 [2024-11-10 14:58:54,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:54,192 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:54,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 101 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-10 14:58:54,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-10 14:58:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 64 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:54,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2024-11-10 14:58:54,196 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 14 [2024-11-10 14:58:54,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:54,196 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2024-11-10 14:58:54,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2024-11-10 14:58:54,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-10 14:58:54,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:54,197 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:54,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 14:58:54,198 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:54,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:54,199 INFO L85 PathProgramCache]: Analyzing trace with hash -888614447, now seen corresponding path program 1 times [2024-11-10 14:58:54,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:54,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530499225] [2024-11-10 14:58:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:54,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:54,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:54,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530499225] [2024-11-10 14:58:54,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530499225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:54,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:54,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 14:58:54,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773427836] [2024-11-10 14:58:54,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:54,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 14:58:54,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:54,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 14:58:54,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:58:54,312 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:54,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:54,334 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2024-11-10 14:58:54,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 14:58:54,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-10 14:58:54,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:54,335 INFO L225 Difference]: With dead ends: 64 [2024-11-10 14:58:54,335 INFO L226 Difference]: Without dead ends: 64 [2024-11-10 14:58:54,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:58:54,336 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:54,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 81 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:54,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-10 14:58:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2024-11-10 14:58:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.5) internal successors, (69), 57 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:54,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2024-11-10 14:58:54,341 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 14 [2024-11-10 14:58:54,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:54,341 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2024-11-10 14:58:54,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:54,341 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2024-11-10 14:58:54,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-10 14:58:54,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:54,342 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:54,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 14:58:54,346 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:54,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash -604796846, now seen corresponding path program 1 times [2024-11-10 14:58:54,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:54,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937016135] [2024-11-10 14:58:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:54,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:54,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:54,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937016135] [2024-11-10 14:58:54,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937016135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:54,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393815765] [2024-11-10 14:58:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:54,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:54,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:54,572 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) [2024-11-10 14:58:54,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 14:58:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:54,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 14:58:54,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:54,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 14:58:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:54,799 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:58:54,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393815765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:54,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:58:54,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-10 14:58:54,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585884132] [2024-11-10 14:58:54,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:54,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:58:54,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:54,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:58:54,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-10 14:58:54,802 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:54,864 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2024-11-10 14:58:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:58:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-10 14:58:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:54,866 INFO L225 Difference]: With dead ends: 57 [2024-11-10 14:58:54,866 INFO L226 Difference]: Without dead ends: 57 [2024-11-10 14:58:54,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-10 14:58:54,867 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 14 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:54,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 118 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:54,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-10 14:58:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-10 14:58:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 56 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2024-11-10 14:58:54,870 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 16 [2024-11-10 14:58:54,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:54,870 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2024-11-10 14:58:54,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:54,870 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-11-10 14:58:54,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-10 14:58:54,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:54,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:54,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 14:58:55,071 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,SelfDestructingSolverStorable11 [2024-11-10 14:58:55,072 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:55,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:55,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1970961657, now seen corresponding path program 1 times [2024-11-10 14:58:55,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:55,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805209603] [2024-11-10 14:58:55,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:55,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:55,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805209603] [2024-11-10 14:58:55,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805209603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:55,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:55,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:58:55,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739605962] [2024-11-10 14:58:55,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:55,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:58:55,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:55,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:58:55,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:55,113 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) 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) [2024-11-10 14:58:55,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:55,158 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-11-10 14:58:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:58:55,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) 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 [2024-11-10 14:58:55,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:55,159 INFO L225 Difference]: With dead ends: 55 [2024-11-10 14:58:55,159 INFO L226 Difference]: Without dead ends: 55 [2024-11-10 14:58:55,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:55,160 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:55,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 68 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:55,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-10 14:58:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-11-10 14:58:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.391304347826087) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:55,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-11-10 14:58:55,162 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 17 [2024-11-10 14:58:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:55,166 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-11-10 14:58:55,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) 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) [2024-11-10 14:58:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-11-10 14:58:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-10 14:58:55,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:55,167 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:55,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 14:58:55,167 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:55,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:55,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1970961658, now seen corresponding path program 1 times [2024-11-10 14:58:55,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:55,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273125387] [2024-11-10 14:58:55,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:55,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:55,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:55,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273125387] [2024-11-10 14:58:55,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273125387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:55,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:55,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:58:55,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436762314] [2024-11-10 14:58:55,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:55,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:58:55,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:55,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:58:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:58:55,309 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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) [2024-11-10 14:58:55,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:55,415 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2024-11-10 14:58:55,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 14:58:55,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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 [2024-11-10 14:58:55,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:55,416 INFO L225 Difference]: With dead ends: 78 [2024-11-10 14:58:55,416 INFO L226 Difference]: Without dead ends: 78 [2024-11-10 14:58:55,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-10 14:58:55,417 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 47 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:55,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 134 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:55,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-10 14:58:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 65. [2024-11-10 14:58:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 64 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2024-11-10 14:58:55,420 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 17 [2024-11-10 14:58:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:55,421 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2024-11-10 14:58:55,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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) [2024-11-10 14:58:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2024-11-10 14:58:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-10 14:58:55,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:55,422 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:55,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 14:58:55,424 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:55,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:55,424 INFO L85 PathProgramCache]: Analyzing trace with hash 420825162, now seen corresponding path program 1 times [2024-11-10 14:58:55,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:55,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493434406] [2024-11-10 14:58:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:55,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:55,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:55,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493434406] [2024-11-10 14:58:55,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493434406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:55,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999058786] [2024-11-10 14:58:55,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:55,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:55,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:55,698 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) [2024-11-10 14:58:55,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 14:58:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:55,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 14:58:55,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:55,825 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 [2024-11-10 14:58:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:55,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:58:55,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999058786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:55,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:58:55,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2024-11-10 14:58:55,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534195130] [2024-11-10 14:58:55,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:55,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 14:58:55,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 14:58:55,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-10 14:58:55,880 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2024-11-10 14:58:56,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:56,009 INFO L93 Difference]: Finished difference Result 93 states and 114 transitions. [2024-11-10 14:58:56,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:58:56,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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 [2024-11-10 14:58:56,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:56,010 INFO L225 Difference]: With dead ends: 93 [2024-11-10 14:58:56,010 INFO L226 Difference]: Without dead ends: 93 [2024-11-10 14:58:56,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-10 14:58:56,011 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 40 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:56,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 208 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:56,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-10 14:58:56,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2024-11-10 14:58:56,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 76 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2024-11-10 14:58:56,013 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 20 [2024-11-10 14:58:56,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:56,014 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2024-11-10 14:58:56,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2024-11-10 14:58:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2024-11-10 14:58:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-10 14:58:56,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:56,015 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:56,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:56,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:56,219 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:56,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash 160609619, now seen corresponding path program 1 times [2024-11-10 14:58:56,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:56,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23869331] [2024-11-10 14:58:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:56,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:56,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23869331] [2024-11-10 14:58:56,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23869331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:56,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:56,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 14:58:56,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486509514] [2024-11-10 14:58:56,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:56,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 14:58:56,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:56,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 14:58:56,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:58:56,273 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:56,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:56,324 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2024-11-10 14:58:56,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 14:58:56,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-10 14:58:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:56,326 INFO L225 Difference]: With dead ends: 76 [2024-11-10 14:58:56,326 INFO L226 Difference]: Without dead ends: 76 [2024-11-10 14:58:56,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:58:56,326 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 30 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:56,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 105 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-10 14:58:56,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-10 14:58:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 75 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:56,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2024-11-10 14:58:56,329 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 21 [2024-11-10 14:58:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:56,329 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2024-11-10 14:58:56,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:56,329 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2024-11-10 14:58:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-10 14:58:56,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:56,330 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:56,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 14:58:56,330 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:56,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:56,331 INFO L85 PathProgramCache]: Analyzing trace with hash 160609620, now seen corresponding path program 1 times [2024-11-10 14:58:56,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:56,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193412185] [2024-11-10 14:58:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:56,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:56,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:56,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193412185] [2024-11-10 14:58:56,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193412185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:56,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:56,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 14:58:56,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915342357] [2024-11-10 14:58:56,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:56,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 14:58:56,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:56,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 14:58:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 14:58:56,488 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:56,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:56,583 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2024-11-10 14:58:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 14:58:56,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-10 14:58:56,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:56,584 INFO L225 Difference]: With dead ends: 97 [2024-11-10 14:58:56,584 INFO L226 Difference]: Without dead ends: 97 [2024-11-10 14:58:56,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 14:58:56,585 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 25 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:56,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 164 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:56,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-10 14:58:56,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2024-11-10 14:58:56,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 80 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:56,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2024-11-10 14:58:56,588 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 21 [2024-11-10 14:58:56,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:56,588 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2024-11-10 14:58:56,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:56,588 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2024-11-10 14:58:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 14:58:56,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:56,589 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:56,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 14:58:56,590 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:56,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:56,590 INFO L85 PathProgramCache]: Analyzing trace with hash 69290536, now seen corresponding path program 1 times [2024-11-10 14:58:56,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:56,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762771993] [2024-11-10 14:58:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:56,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:56,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:56,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762771993] [2024-11-10 14:58:56,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762771993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:56,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146523986] [2024-11-10 14:58:56,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:56,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:56,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:56,739 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) [2024-11-10 14:58:56,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 14:58:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:56,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-10 14:58:56,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:56,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:56,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-10 14:58:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146523986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:57,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:57,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2024-11-10 14:58:57,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36003943] [2024-11-10 14:58:57,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:57,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 14:58:57,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:57,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 14:58:57,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-10 14:58:57,078 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 17 states, 16 states have (on average 3.75) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:57,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:57,269 INFO L93 Difference]: Finished difference Result 124 states and 156 transitions. [2024-11-10 14:58:57,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 14:58:57,269 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.75) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-10 14:58:57,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:57,270 INFO L225 Difference]: With dead ends: 124 [2024-11-10 14:58:57,271 INFO L226 Difference]: Without dead ends: 124 [2024-11-10 14:58:57,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-10 14:58:57,272 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 72 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:57,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 388 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 14:58:57,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-10 14:58:57,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 89. [2024-11-10 14:58:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 88 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:57,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2024-11-10 14:58:57,275 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 24 [2024-11-10 14:58:57,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:57,275 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2024-11-10 14:58:57,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.75) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:57,275 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2024-11-10 14:58:57,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-10 14:58:57,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:57,276 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:57,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:57,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 14:58:57,476 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:57,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:57,477 INFO L85 PathProgramCache]: Analyzing trace with hash -315609399, now seen corresponding path program 1 times [2024-11-10 14:58:57,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:57,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695796272] [2024-11-10 14:58:57,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:57,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:57,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:57,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695796272] [2024-11-10 14:58:57,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695796272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:57,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:57,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:58:57,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381101872] [2024-11-10 14:58:57,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:57,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:58:57,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:57,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:58:57,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:57,503 INFO L87 Difference]: Start difference. First operand 89 states and 112 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2024-11-10 14:58:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:57,513 INFO L93 Difference]: Finished difference Result 86 states and 104 transitions. [2024-11-10 14:58:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:58:57,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) Word has length 25 [2024-11-10 14:58:57,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:57,514 INFO L225 Difference]: With dead ends: 86 [2024-11-10 14:58:57,514 INFO L226 Difference]: Without dead ends: 86 [2024-11-10 14:58:57,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:57,514 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:57,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-10 14:58:57,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2024-11-10 14:58:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 83 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:57,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2024-11-10 14:58:57,517 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 25 [2024-11-10 14:58:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:57,517 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2024-11-10 14:58:57,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2024-11-10 14:58:57,517 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2024-11-10 14:58:57,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 14:58:57,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:57,518 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:57,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 14:58:57,518 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:57,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:57,519 INFO L85 PathProgramCache]: Analyzing trace with hash -193853798, now seen corresponding path program 1 times [2024-11-10 14:58:57,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:57,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872848297] [2024-11-10 14:58:57,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:57,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:57,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872848297] [2024-11-10 14:58:57,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872848297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534783029] [2024-11-10 14:58:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:57,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:57,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:57,603 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) [2024-11-10 14:58:57,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 14:58:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:57,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 14:58:57,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:57,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:57,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534783029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:57,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:57,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-10 14:58:57,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597904005] [2024-11-10 14:58:57,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:57,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:58:57,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:57,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:58:57,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:58:57,753 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:57,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:57,803 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2024-11-10 14:58:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 14:58:57,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-10 14:58:57,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:57,804 INFO L225 Difference]: With dead ends: 160 [2024-11-10 14:58:57,804 INFO L226 Difference]: Without dead ends: 160 [2024-11-10 14:58:57,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 14:58:57,805 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 25 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:57,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 213 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-10 14:58:57,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 144. [2024-11-10 14:58:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.2517985611510791) internal successors, (174), 143 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 174 transitions. [2024-11-10 14:58:57,808 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 174 transitions. Word has length 27 [2024-11-10 14:58:57,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:57,809 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 174 transitions. [2024-11-10 14:58:57,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 174 transitions. [2024-11-10 14:58:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 14:58:57,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:57,809 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:57,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 14:58:58,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:58,011 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:58,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:58,011 INFO L85 PathProgramCache]: Analyzing trace with hash -605404666, now seen corresponding path program 1 times [2024-11-10 14:58:58,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:58,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578731902] [2024-11-10 14:58:58,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:58,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:58,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:58,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578731902] [2024-11-10 14:58:58,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578731902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:58,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:58,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:58:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682645979] [2024-11-10 14:58:58,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:58,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 14:58:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 14:58:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:58:58,059 INFO L87 Difference]: Start difference. First operand 144 states and 174 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:58,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:58,088 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2024-11-10 14:58:58,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 14:58:58,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-10 14:58:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:58,089 INFO L225 Difference]: With dead ends: 152 [2024-11-10 14:58:58,089 INFO L226 Difference]: Without dead ends: 152 [2024-11-10 14:58:58,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:58:58,090 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 19 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:58,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 137 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:58,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-10 14:58:58,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2024-11-10 14:58:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.223021582733813) internal successors, (170), 143 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:58,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2024-11-10 14:58:58,093 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 27 [2024-11-10 14:58:58,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:58,094 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2024-11-10 14:58:58,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:58,094 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2024-11-10 14:58:58,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 14:58:58,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:58,095 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:58,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-10 14:58:58,095 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:58,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:58,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1644936100, now seen corresponding path program 2 times [2024-11-10 14:58:58,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:58,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857042031] [2024-11-10 14:58:58,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:58,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:58,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:58,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857042031] [2024-11-10 14:58:58,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857042031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:58,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262474960] [2024-11-10 14:58:58,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:58:58,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:58,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:58,481 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) [2024-11-10 14:58:58,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 14:58:58,563 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:58:58,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:58,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-10 14:58:58,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:58,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 14:58:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:58,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:58,753 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 18 treesize of output 16 [2024-11-10 14:58:58,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-10 14:58:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:58,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262474960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:58,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:58,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 20 [2024-11-10 14:58:58,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195373063] [2024-11-10 14:58:58,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:58,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 14:58:58,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:58,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 14:58:58,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2024-11-10 14:58:58,825 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:59,560 INFO L93 Difference]: Finished difference Result 288 states and 336 transitions. [2024-11-10 14:58:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 14:58:59,561 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-10 14:58:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:59,562 INFO L225 Difference]: With dead ends: 288 [2024-11-10 14:58:59,562 INFO L226 Difference]: Without dead ends: 288 [2024-11-10 14:58:59,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2024-11-10 14:58:59,563 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 164 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:59,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 992 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 14:58:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-10 14:58:59,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 196. [2024-11-10 14:58:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.2094240837696335) internal successors, (231), 195 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 231 transitions. [2024-11-10 14:58:59,567 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 231 transitions. Word has length 27 [2024-11-10 14:58:59,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:59,568 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 231 transitions. [2024-11-10 14:58:59,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:59,568 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 231 transitions. [2024-11-10 14:58:59,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 14:58:59,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:59,569 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:59,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:59,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:59,773 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:58:59,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1050910683, now seen corresponding path program 1 times [2024-11-10 14:58:59,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:59,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157219276] [2024-11-10 14:58:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:59,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:59,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:59,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157219276] [2024-11-10 14:58:59,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157219276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:59,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:59,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 14:58:59,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554970953] [2024-11-10 14:58:59,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:59,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 14:58:59,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:59,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 14:58:59,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-10 14:58:59,996 INFO L87 Difference]: Start difference. First operand 196 states and 231 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:00,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:00,049 INFO L93 Difference]: Finished difference Result 285 states and 328 transitions. [2024-11-10 14:59:00,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:59:00,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-10 14:59:00,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:00,050 INFO L225 Difference]: With dead ends: 285 [2024-11-10 14:59:00,050 INFO L226 Difference]: Without dead ends: 285 [2024-11-10 14:59:00,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-10 14:59:00,051 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:00,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 257 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:59:00,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-10 14:59:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 234. [2024-11-10 14:59:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.1965065502183405) internal successors, (274), 233 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 274 transitions. [2024-11-10 14:59:00,056 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 274 transitions. Word has length 27 [2024-11-10 14:59:00,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:00,056 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 274 transitions. [2024-11-10 14:59:00,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 274 transitions. [2024-11-10 14:59:00,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 14:59:00,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:00,057 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:00,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-10 14:59:00,057 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:00,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:00,058 INFO L85 PathProgramCache]: Analyzing trace with hash 983903930, now seen corresponding path program 1 times [2024-11-10 14:59:00,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:00,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940749279] [2024-11-10 14:59:00,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:00,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:00,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:00,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940749279] [2024-11-10 14:59:00,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940749279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:59:00,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:59:00,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 14:59:00,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208303350] [2024-11-10 14:59:00,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:59:00,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 14:59:00,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:00,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 14:59:00,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-10 14:59:00,289 INFO L87 Difference]: Start difference. First operand 234 states and 274 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:00,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:00,374 INFO L93 Difference]: Finished difference Result 258 states and 298 transitions. [2024-11-10 14:59:00,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 14:59:00,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-10 14:59:00,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:00,375 INFO L225 Difference]: With dead ends: 258 [2024-11-10 14:59:00,375 INFO L226 Difference]: Without dead ends: 258 [2024-11-10 14:59:00,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-10 14:59:00,376 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:00,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 217 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:59:00,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-10 14:59:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 217. [2024-11-10 14:59:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 212 states have (on average 1.2122641509433962) internal successors, (257), 216 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 257 transitions. [2024-11-10 14:59:00,381 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 257 transitions. Word has length 27 [2024-11-10 14:59:00,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:00,382 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 257 transitions. [2024-11-10 14:59:00,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:00,382 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 257 transitions. [2024-11-10 14:59:00,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-10 14:59:00,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:00,383 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:00,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-10 14:59:00,383 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:00,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:00,384 INFO L85 PathProgramCache]: Analyzing trace with hash -614969859, now seen corresponding path program 1 times [2024-11-10 14:59:00,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:00,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321268261] [2024-11-10 14:59:00,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:00,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:00,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:00,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321268261] [2024-11-10 14:59:00,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321268261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:59:00,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:59:00,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:59:00,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917579984] [2024-11-10 14:59:00,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:59:00,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:59:00,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:00,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:59:00,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:59:00,501 INFO L87 Difference]: Start difference. First operand 217 states and 257 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 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) [2024-11-10 14:59:00,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:00,524 INFO L93 Difference]: Finished difference Result 216 states and 256 transitions. [2024-11-10 14:59:00,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:59:00,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 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 30 [2024-11-10 14:59:00,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:00,525 INFO L225 Difference]: With dead ends: 216 [2024-11-10 14:59:00,525 INFO L226 Difference]: Without dead ends: 160 [2024-11-10 14:59:00,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:59:00,526 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:00,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 70 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:59:00,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-10 14:59:00,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-10 14:59:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 156 states have (on average 1.1474358974358974) internal successors, (179), 159 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 179 transitions. [2024-11-10 14:59:00,529 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 179 transitions. Word has length 30 [2024-11-10 14:59:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:00,529 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 179 transitions. [2024-11-10 14:59:00,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 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) [2024-11-10 14:59:00,530 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 179 transitions. [2024-11-10 14:59:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-10 14:59:00,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:00,530 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:00,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-10 14:59:00,531 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:00,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:00,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1658118785, now seen corresponding path program 1 times [2024-11-10 14:59:00,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:00,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884789868] [2024-11-10 14:59:00,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:00,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:00,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:00,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884789868] [2024-11-10 14:59:00,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884789868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:00,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31099046] [2024-11-10 14:59:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:00,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:00,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:00,718 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) [2024-11-10 14:59:00,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 14:59:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:00,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-10 14:59:00,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:00,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:01,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-10 14:59:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:01,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31099046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:01,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:01,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-11-10 14:59:01,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556765114] [2024-11-10 14:59:01,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:01,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 14:59:01,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:01,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 14:59:01,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-10 14:59:01,127 INFO L87 Difference]: Start difference. First operand 160 states and 179 transitions. Second operand has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:01,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:01,341 INFO L93 Difference]: Finished difference Result 210 states and 232 transitions. [2024-11-10 14:59:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 14:59:01,341 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-10 14:59:01,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:01,342 INFO L225 Difference]: With dead ends: 210 [2024-11-10 14:59:01,342 INFO L226 Difference]: Without dead ends: 208 [2024-11-10 14:59:01,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-10 14:59:01,343 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 66 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:01,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 473 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 14:59:01,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-10 14:59:01,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 154. [2024-11-10 14:59:01,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 150 states have (on average 1.16) internal successors, (174), 153 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:01,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2024-11-10 14:59:01,347 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 31 [2024-11-10 14:59:01,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:01,347 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2024-11-10 14:59:01,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2024-11-10 14:59:01,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-10 14:59:01,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:01,348 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:01,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 14:59:01,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:01,552 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:01,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:01,552 INFO L85 PathProgramCache]: Analyzing trace with hash -461773028, now seen corresponding path program 1 times [2024-11-10 14:59:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:01,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761507787] [2024-11-10 14:59:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:01,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:01,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:01,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761507787] [2024-11-10 14:59:01,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761507787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:59:01,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:59:01,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-10 14:59:01,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818538770] [2024-11-10 14:59:01,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:59:01,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 14:59:01,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:01,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 14:59:01,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-10 14:59:01,766 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 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) [2024-11-10 14:59:01,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:01,830 INFO L93 Difference]: Finished difference Result 231 states and 256 transitions. [2024-11-10 14:59:01,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 14:59:01,831 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 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 31 [2024-11-10 14:59:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:01,832 INFO L225 Difference]: With dead ends: 231 [2024-11-10 14:59:01,832 INFO L226 Difference]: Without dead ends: 197 [2024-11-10 14:59:01,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-10 14:59:01,833 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:01,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 207 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:59:01,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-10 14:59:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 160. [2024-11-10 14:59:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 156 states have (on average 1.1666666666666667) internal successors, (182), 159 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 182 transitions. [2024-11-10 14:59:01,836 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 182 transitions. Word has length 31 [2024-11-10 14:59:01,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:01,836 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 182 transitions. [2024-11-10 14:59:01,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 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) [2024-11-10 14:59:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 182 transitions. [2024-11-10 14:59:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-10 14:59:01,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:01,837 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:01,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-10 14:59:01,837 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:01,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash -609193466, now seen corresponding path program 3 times [2024-11-10 14:59:01,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:01,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304011237] [2024-11-10 14:59:01,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:01,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:02,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:02,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304011237] [2024-11-10 14:59:02,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304011237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:02,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916531427] [2024-11-10 14:59:02,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 14:59:02,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:02,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:02,270 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) [2024-11-10 14:59:02,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 14:59:02,370 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 14:59:02,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:02,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-10 14:59:02,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:02,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 14:59:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:02,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:02,612 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 18 treesize of output 16 [2024-11-10 14:59:02,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-10 14:59:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916531427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:02,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:02,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 23 [2024-11-10 14:59:02,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223179975] [2024-11-10 14:59:02,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:02,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 14:59:02,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:02,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 14:59:02,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2024-11-10 14:59:02,701 INFO L87 Difference]: Start difference. First operand 160 states and 182 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:03,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:03,665 INFO L93 Difference]: Finished difference Result 334 states and 366 transitions. [2024-11-10 14:59:03,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-10 14:59:03,666 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-10 14:59:03,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:03,667 INFO L225 Difference]: With dead ends: 334 [2024-11-10 14:59:03,667 INFO L226 Difference]: Without dead ends: 268 [2024-11-10 14:59:03,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2024-11-10 14:59:03,669 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 108 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:03,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1031 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 14:59:03,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-10 14:59:03,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 214. [2024-11-10 14:59:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 210 states have (on average 1.1428571428571428) internal successors, (240), 213 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 240 transitions. [2024-11-10 14:59:03,672 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 240 transitions. Word has length 34 [2024-11-10 14:59:03,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:03,673 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 240 transitions. [2024-11-10 14:59:03,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:03,673 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 240 transitions. [2024-11-10 14:59:03,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-10 14:59:03,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:03,674 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:03,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 14:59:03,875 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,SelfDestructingSolverStorable27 [2024-11-10 14:59:03,875 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:03,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1481718586, now seen corresponding path program 1 times [2024-11-10 14:59:03,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:03,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572890756] [2024-11-10 14:59:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:03,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:04,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:04,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572890756] [2024-11-10 14:59:04,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572890756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:04,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417594966] [2024-11-10 14:59:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:04,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:04,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:04,155 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) [2024-11-10 14:59:04,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 14:59:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:04,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 14:59:04,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:04,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:04,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 14:59:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:04,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417594966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:04,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:04,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2024-11-10 14:59:04,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288655958] [2024-11-10 14:59:04,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:04,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 14:59:04,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:04,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 14:59:04,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-10 14:59:04,537 INFO L87 Difference]: Start difference. First operand 214 states and 240 transitions. Second operand has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 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) [2024-11-10 14:59:04,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:04,721 INFO L93 Difference]: Finished difference Result 238 states and 262 transitions. [2024-11-10 14:59:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 14:59:04,721 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-10 14:59:04,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:04,722 INFO L225 Difference]: With dead ends: 238 [2024-11-10 14:59:04,722 INFO L226 Difference]: Without dead ends: 238 [2024-11-10 14:59:04,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-11-10 14:59:04,723 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:04,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 336 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:59:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-10 14:59:04,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 226. [2024-11-10 14:59:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 222 states have (on average 1.135135135135135) internal successors, (252), 225 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 252 transitions. [2024-11-10 14:59:04,727 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 252 transitions. Word has length 35 [2024-11-10 14:59:04,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:04,728 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 252 transitions. [2024-11-10 14:59:04,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 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) [2024-11-10 14:59:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 252 transitions. [2024-11-10 14:59:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-10 14:59:04,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:04,729 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:04,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:04,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-10 14:59:04,933 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:04,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2037605501, now seen corresponding path program 2 times [2024-11-10 14:59:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:04,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140354344] [2024-11-10 14:59:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:04,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:05,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140354344] [2024-11-10 14:59:05,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140354344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518477135] [2024-11-10 14:59:05,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:59:05,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:05,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:05,178 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) [2024-11-10 14:59:05,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 14:59:05,281 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:59:05,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:05,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-10 14:59:05,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:05,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:05,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-10 14:59:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:05,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518477135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:05,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:05,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-10 14:59:05,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044588029] [2024-11-10 14:59:05,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:05,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 14:59:05,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:05,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 14:59:05,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2024-11-10 14:59:05,784 INFO L87 Difference]: Start difference. First operand 226 states and 252 transitions. Second operand has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:06,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:06,112 INFO L93 Difference]: Finished difference Result 301 states and 331 transitions. [2024-11-10 14:59:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 14:59:06,113 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2024-11-10 14:59:06,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:06,114 INFO L225 Difference]: With dead ends: 301 [2024-11-10 14:59:06,114 INFO L226 Difference]: Without dead ends: 299 [2024-11-10 14:59:06,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2024-11-10 14:59:06,115 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 80 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:06,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 599 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 14:59:06,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-10 14:59:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 222. [2024-11-10 14:59:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 218 states have (on average 1.1422018348623852) internal successors, (249), 221 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 249 transitions. [2024-11-10 14:59:06,123 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 249 transitions. Word has length 38 [2024-11-10 14:59:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:06,123 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 249 transitions. [2024-11-10 14:59:06,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 249 transitions. [2024-11-10 14:59:06,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-10 14:59:06,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:06,124 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:06,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 14:59:06,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:06,325 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:06,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash 428782544, now seen corresponding path program 1 times [2024-11-10 14:59:06,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:06,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413389336] [2024-11-10 14:59:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:06,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:06,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:06,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413389336] [2024-11-10 14:59:06,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413389336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:06,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022329760] [2024-11-10 14:59:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:06,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:06,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:06,814 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:06,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 14:59:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:06,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-10 14:59:06,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:06,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 14:59:06,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-10 14:59:06,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-10 14:59:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:07,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:07,938 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 14:59:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:08,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022329760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:08,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:08,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 33 [2024-11-10 14:59:08,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170684844] [2024-11-10 14:59:08,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:08,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 14:59:08,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:08,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 14:59:08,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 14:59:08,032 INFO L87 Difference]: Start difference. First operand 222 states and 249 transitions. Second operand has 34 states, 33 states have (on average 3.393939393939394) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:08,733 INFO L93 Difference]: Finished difference Result 317 states and 351 transitions. [2024-11-10 14:59:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 14:59:08,733 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.393939393939394) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-10 14:59:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:08,734 INFO L225 Difference]: With dead ends: 317 [2024-11-10 14:59:08,735 INFO L226 Difference]: Without dead ends: 313 [2024-11-10 14:59:08,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=300, Invalid=1592, Unknown=0, NotChecked=0, Total=1892 [2024-11-10 14:59:08,736 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 70 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:08,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 424 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 14:59:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-10 14:59:08,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 250. [2024-11-10 14:59:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 246 states have (on average 1.1382113821138211) internal successors, (280), 249 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 280 transitions. [2024-11-10 14:59:08,740 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 280 transitions. Word has length 39 [2024-11-10 14:59:08,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:08,740 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 280 transitions. [2024-11-10 14:59:08,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.393939393939394) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:08,741 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 280 transitions. [2024-11-10 14:59:08,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-10 14:59:08,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:08,741 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:08,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 14:59:08,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-10 14:59:08,942 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:08,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:08,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1862476384, now seen corresponding path program 4 times [2024-11-10 14:59:08,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:08,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030651164] [2024-11-10 14:59:08,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:08,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:09,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:09,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030651164] [2024-11-10 14:59:09,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030651164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:09,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548791065] [2024-11-10 14:59:09,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 14:59:09,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:09,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:09,415 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:09,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 14:59:09,516 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 14:59:09,516 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:09,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-10 14:59:09,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:09,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 14:59:09,771 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 [2024-11-10 14:59:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:09,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:09,819 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 18 treesize of output 16 [2024-11-10 14:59:09,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-10 14:59:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:09,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548791065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:09,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:09,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 27 [2024-11-10 14:59:09,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167547143] [2024-11-10 14:59:09,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:09,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 14:59:09,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:09,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 14:59:09,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2024-11-10 14:59:09,914 INFO L87 Difference]: Start difference. First operand 250 states and 280 transitions. Second operand has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:11,012 INFO L93 Difference]: Finished difference Result 465 states and 506 transitions. [2024-11-10 14:59:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-10 14:59:11,013 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-10 14:59:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:11,014 INFO L225 Difference]: With dead ends: 465 [2024-11-10 14:59:11,015 INFO L226 Difference]: Without dead ends: 390 [2024-11-10 14:59:11,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=1887, Unknown=0, NotChecked=0, Total=2070 [2024-11-10 14:59:11,018 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 115 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:11,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1495 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 14:59:11,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-10 14:59:11,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 317. [2024-11-10 14:59:11,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 313 states have (on average 1.1277955271565496) internal successors, (353), 316 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 353 transitions. [2024-11-10 14:59:11,024 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 353 transitions. Word has length 41 [2024-11-10 14:59:11,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:11,025 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 353 transitions. [2024-11-10 14:59:11,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:11,025 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 353 transitions. [2024-11-10 14:59:11,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-10 14:59:11,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:11,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:11,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:11,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-10 14:59:11,226 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:11,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:11,227 INFO L85 PathProgramCache]: Analyzing trace with hash -531494912, now seen corresponding path program 2 times [2024-11-10 14:59:11,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:11,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518488737] [2024-11-10 14:59:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:11,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:11,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:11,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518488737] [2024-11-10 14:59:11,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518488737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:11,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589596011] [2024-11-10 14:59:11,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:59:11,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:11,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:11,665 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:11,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 14:59:11,773 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:59:11,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:11,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-10 14:59:11,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:11,819 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 14 treesize of output 10 [2024-11-10 14:59:12,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 14:59:12,194 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 20 treesize of output 17 [2024-11-10 14:59:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:12,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:12,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-10 14:59:12,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-10 14:59:12,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-10 14:59:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:12,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589596011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:12,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:12,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 35 [2024-11-10 14:59:12,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365110666] [2024-11-10 14:59:12,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:12,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-10 14:59:12,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:12,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-10 14:59:12,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 14:59:12,795 INFO L87 Difference]: Start difference. First operand 317 states and 353 transitions. Second operand has 35 states, 35 states have (on average 2.742857142857143) internal successors, (96), 35 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:13,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:13,389 INFO L93 Difference]: Finished difference Result 348 states and 378 transitions. [2024-11-10 14:59:13,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 14:59:13,390 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.742857142857143) internal successors, (96), 35 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-10 14:59:13,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:13,391 INFO L225 Difference]: With dead ends: 348 [2024-11-10 14:59:13,391 INFO L226 Difference]: Without dead ends: 307 [2024-11-10 14:59:13,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=209, Invalid=1861, Unknown=0, NotChecked=0, Total=2070 [2024-11-10 14:59:13,392 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:13,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 478 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 14:59:13,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-10 14:59:13,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 299. [2024-11-10 14:59:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 295 states have (on average 1.1254237288135593) internal successors, (332), 298 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 332 transitions. [2024-11-10 14:59:13,397 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 332 transitions. Word has length 41 [2024-11-10 14:59:13,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:13,397 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 332 transitions. [2024-11-10 14:59:13,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.742857142857143) internal successors, (96), 35 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:13,397 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 332 transitions. [2024-11-10 14:59:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 14:59:13,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:13,398 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:13,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:13,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-10 14:59:13,602 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:13,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:13,603 INFO L85 PathProgramCache]: Analyzing trace with hash -3965565, now seen corresponding path program 3 times [2024-11-10 14:59:13,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:13,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241994007] [2024-11-10 14:59:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:13,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:13,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:13,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241994007] [2024-11-10 14:59:13,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241994007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:13,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639106791] [2024-11-10 14:59:13,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 14:59:13,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:13,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:13,904 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:13,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 14:59:14,014 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-10 14:59:14,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:14,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-10 14:59:14,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:14,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:14,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-10 14:59:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:14,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639106791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:14,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:14,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2024-11-10 14:59:14,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114314209] [2024-11-10 14:59:14,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:14,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-10 14:59:14,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:14,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-10 14:59:14,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2024-11-10 14:59:14,459 INFO L87 Difference]: Start difference. First operand 299 states and 332 transitions. Second operand has 32 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 32 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:14,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:14,714 INFO L93 Difference]: Finished difference Result 407 states and 445 transitions. [2024-11-10 14:59:14,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 14:59:14,715 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 32 states have internal predecessors, (102), 0 states have call successors, (0), 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 45 [2024-11-10 14:59:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:14,716 INFO L225 Difference]: With dead ends: 407 [2024-11-10 14:59:14,716 INFO L226 Difference]: Without dead ends: 405 [2024-11-10 14:59:14,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 14:59:14,717 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 125 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:14,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 595 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 14:59:14,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-10 14:59:14,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 297. [2024-11-10 14:59:14,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 293 states have (on average 1.129692832764505) internal successors, (331), 296 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 331 transitions. [2024-11-10 14:59:14,721 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 331 transitions. Word has length 45 [2024-11-10 14:59:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:14,722 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 331 transitions. [2024-11-10 14:59:14,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 32 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 331 transitions. [2024-11-10 14:59:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-10 14:59:14,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:14,723 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:14,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 14:59:14,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:14,924 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:14,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:14,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1503469598, now seen corresponding path program 1 times [2024-11-10 14:59:14,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:14,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827831824] [2024-11-10 14:59:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:14,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:15,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:15,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827831824] [2024-11-10 14:59:15,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827831824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:15,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490192746] [2024-11-10 14:59:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:15,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:15,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:15,341 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:15,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 14:59:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:15,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-10 14:59:15,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:15,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 14:59:15,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-10 14:59:15,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-10 14:59:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:16,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:16,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490192746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:16,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:16,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 34 [2024-11-10 14:59:16,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061891240] [2024-11-10 14:59:16,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:16,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-10 14:59:16,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:16,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-10 14:59:16,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 14:59:16,819 INFO L87 Difference]: Start difference. First operand 297 states and 331 transitions. Second operand has 35 states, 34 states have (on average 3.823529411764706) internal successors, (130), 35 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:17,627 INFO L93 Difference]: Finished difference Result 398 states and 433 transitions. [2024-11-10 14:59:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 14:59:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.823529411764706) internal successors, (130), 35 states have internal predecessors, (130), 0 states have call successors, (0), 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 46 [2024-11-10 14:59:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:17,629 INFO L225 Difference]: With dead ends: 398 [2024-11-10 14:59:17,629 INFO L226 Difference]: Without dead ends: 390 [2024-11-10 14:59:17,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=342, Invalid=2208, Unknown=0, NotChecked=0, Total=2550 [2024-11-10 14:59:17,630 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 208 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:17,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 520 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 14:59:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-10 14:59:17,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 325. [2024-11-10 14:59:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 321 states have (on average 1.118380062305296) internal successors, (359), 324 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 359 transitions. [2024-11-10 14:59:17,640 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 359 transitions. Word has length 46 [2024-11-10 14:59:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:17,640 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 359 transitions. [2024-11-10 14:59:17,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.823529411764706) internal successors, (130), 35 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:17,640 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 359 transitions. [2024-11-10 14:59:17,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-10 14:59:17,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:17,641 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:17,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:17,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:17,845 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:17,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:17,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1149360702, now seen corresponding path program 5 times [2024-11-10 14:59:17,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:17,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316835588] [2024-11-10 14:59:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:18,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:18,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316835588] [2024-11-10 14:59:18,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316835588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:18,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032770066] [2024-11-10 14:59:18,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 14:59:18,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:18,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:18,399 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:18,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 14:59:18,516 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-10 14:59:18,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:18,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-10 14:59:18,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:18,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 14:59:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:18,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:18,879 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 18 treesize of output 16 [2024-11-10 14:59:18,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-10 14:59:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:18,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032770066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:18,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:18,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 31 [2024-11-10 14:59:18,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116668443] [2024-11-10 14:59:18,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:18,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-10 14:59:18,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:18,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-10 14:59:18,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=858, Unknown=0, NotChecked=0, Total=930 [2024-11-10 14:59:18,978 INFO L87 Difference]: Start difference. First operand 325 states and 359 transitions. Second operand has 31 states, 31 states have (on average 3.129032258064516) internal successors, (97), 31 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:20,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:20,412 INFO L93 Difference]: Finished difference Result 588 states and 634 transitions. [2024-11-10 14:59:20,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-10 14:59:20,413 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.129032258064516) internal successors, (97), 31 states have internal predecessors, (97), 0 states have call successors, (0), 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 48 [2024-11-10 14:59:20,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:20,415 INFO L225 Difference]: With dead ends: 588 [2024-11-10 14:59:20,415 INFO L226 Difference]: Without dead ends: 504 [2024-11-10 14:59:20,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=221, Invalid=2641, Unknown=0, NotChecked=0, Total=2862 [2024-11-10 14:59:20,416 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 132 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:20,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 1866 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-10 14:59:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-10 14:59:20,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 396. [2024-11-10 14:59:20,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 392 states have (on average 1.114795918367347) internal successors, (437), 395 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 437 transitions. [2024-11-10 14:59:20,422 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 437 transitions. Word has length 48 [2024-11-10 14:59:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:20,422 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 437 transitions. [2024-11-10 14:59:20,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.129032258064516) internal successors, (97), 31 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 437 transitions. [2024-11-10 14:59:20,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-10 14:59:20,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:20,424 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:20,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-10 14:59:20,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-10 14:59:20,628 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:20,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:20,628 INFO L85 PathProgramCache]: Analyzing trace with hash 74603432, now seen corresponding path program 3 times [2024-11-10 14:59:20,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:20,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087526862] [2024-11-10 14:59:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:20,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:59:21,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087526862] [2024-11-10 14:59:21,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087526862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354831581] [2024-11-10 14:59:21,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 14:59:21,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:21,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:21,164 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:21,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 14:59:21,301 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 14:59:21,302 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:21,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-10 14:59:21,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:21,436 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 [2024-11-10 14:59:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-10 14:59:21,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:21,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-10 14:59:21,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-10 14:59:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-10 14:59:21,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354831581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:21,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:21,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 37 [2024-11-10 14:59:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426046893] [2024-11-10 14:59:21,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:21,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-10 14:59:21,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-10 14:59:21,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2024-11-10 14:59:21,886 INFO L87 Difference]: Start difference. First operand 396 states and 437 transitions. Second operand has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:22,831 INFO L93 Difference]: Finished difference Result 623 states and 678 transitions. [2024-11-10 14:59:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-10 14:59:22,832 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 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 51 [2024-11-10 14:59:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:22,833 INFO L225 Difference]: With dead ends: 623 [2024-11-10 14:59:22,833 INFO L226 Difference]: Without dead ends: 526 [2024-11-10 14:59:22,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=244, Invalid=3062, Unknown=0, NotChecked=0, Total=3306 [2024-11-10 14:59:22,835 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 43 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:22,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 621 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 14:59:22,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-10 14:59:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 466. [2024-11-10 14:59:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 462 states have (on average 1.1103896103896105) internal successors, (513), 465 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 513 transitions. [2024-11-10 14:59:22,841 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 513 transitions. Word has length 51 [2024-11-10 14:59:22,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:22,841 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 513 transitions. [2024-11-10 14:59:22,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 513 transitions. [2024-11-10 14:59:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-10 14:59:22,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:22,844 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:22,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:23,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-10 14:59:23,045 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:23,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:23,046 INFO L85 PathProgramCache]: Analyzing trace with hash 964784255, now seen corresponding path program 4 times [2024-11-10 14:59:23,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:23,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601328409] [2024-11-10 14:59:23,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:23,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:23,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:23,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601328409] [2024-11-10 14:59:23,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601328409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:23,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884193163] [2024-11-10 14:59:23,495 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 14:59:23,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:23,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:23,497 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:23,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 14:59:23,668 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 14:59:23,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:23,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-10 14:59:23,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:23,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:24,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-10 14:59:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:24,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884193163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:24,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:24,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2024-11-10 14:59:24,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964858675] [2024-11-10 14:59:24,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:24,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-10 14:59:24,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:24,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-10 14:59:24,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 14:59:24,457 INFO L87 Difference]: Start difference. First operand 466 states and 513 transitions. Second operand has 36 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:24,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:24,845 INFO L93 Difference]: Finished difference Result 624 states and 678 transitions. [2024-11-10 14:59:24,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 14:59:24,845 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 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 52 [2024-11-10 14:59:24,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:24,847 INFO L225 Difference]: With dead ends: 624 [2024-11-10 14:59:24,847 INFO L226 Difference]: Without dead ends: 612 [2024-11-10 14:59:24,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=1139, Unknown=0, NotChecked=0, Total=1332 [2024-11-10 14:59:24,848 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 97 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:24,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 810 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 14:59:24,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-10 14:59:24,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 463. [2024-11-10 14:59:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 459 states have (on average 1.1132897603485838) internal successors, (511), 462 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 511 transitions. [2024-11-10 14:59:24,861 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 511 transitions. Word has length 52 [2024-11-10 14:59:24,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:24,861 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 511 transitions. [2024-11-10 14:59:24,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:24,862 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 511 transitions. [2024-11-10 14:59:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-10 14:59:24,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:24,863 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:24,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-10 14:59:25,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-10 14:59:25,067 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:25,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1639465108, now seen corresponding path program 2 times [2024-11-10 14:59:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:25,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422771121] [2024-11-10 14:59:25,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:25,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422771121] [2024-11-10 14:59:25,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422771121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012934727] [2024-11-10 14:59:25,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:59:25,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:25,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:25,555 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:25,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-10 14:59:25,691 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:59:25,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:25,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-10 14:59:25,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:25,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-10 14:59:25,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 14:59:26,160 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:26,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:26,499 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 14:59:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:26,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012934727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:26,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:26,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 36 [2024-11-10 14:59:26,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678603350] [2024-11-10 14:59:26,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:26,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-10 14:59:26,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:26,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-10 14:59:26,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1164, Unknown=0, NotChecked=0, Total=1332 [2024-11-10 14:59:26,574 INFO L87 Difference]: Start difference. First operand 463 states and 511 transitions. Second operand has 37 states, 36 states have (on average 4.277777777777778) internal successors, (154), 37 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:27,188 INFO L93 Difference]: Finished difference Result 662 states and 713 transitions. [2024-11-10 14:59:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 14:59:27,189 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.277777777777778) internal successors, (154), 37 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-10 14:59:27,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:27,191 INFO L225 Difference]: With dead ends: 662 [2024-11-10 14:59:27,191 INFO L226 Difference]: Without dead ends: 634 [2024-11-10 14:59:27,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=247, Invalid=1475, Unknown=0, NotChecked=0, Total=1722 [2024-11-10 14:59:27,191 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 88 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:27,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 769 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 14:59:27,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-10 14:59:27,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 462. [2024-11-10 14:59:27,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 458 states have (on average 1.111353711790393) internal successors, (509), 461 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 509 transitions. [2024-11-10 14:59:27,198 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 509 transitions. Word has length 53 [2024-11-10 14:59:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:27,198 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 509 transitions. [2024-11-10 14:59:27,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.277777777777778) internal successors, (154), 37 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 509 transitions. [2024-11-10 14:59:27,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-10 14:59:27,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:27,200 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:27,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-10 14:59:27,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:27,400 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:27,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1166619420, now seen corresponding path program 6 times [2024-11-10 14:59:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:27,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28264860] [2024-11-10 14:59:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:27,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 18 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:28,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:28,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28264860] [2024-11-10 14:59:28,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28264860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:28,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918344359] [2024-11-10 14:59:28,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 14:59:28,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:28,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:28,028 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:28,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-10 14:59:28,159 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-10 14:59:28,159 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:28,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-10 14:59:28,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:28,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 14:59:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 12 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:28,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:28,528 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 18 treesize of output 16 [2024-11-10 14:59:28,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-10 14:59:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 12 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:28,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918344359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:28,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:28,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 35 [2024-11-10 14:59:28,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916100335] [2024-11-10 14:59:28,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:28,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-10 14:59:28,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:28,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-10 14:59:28,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 14:59:28,617 INFO L87 Difference]: Start difference. First operand 462 states and 509 transitions. Second operand has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:30,084 INFO L93 Difference]: Finished difference Result 795 states and 856 transitions. [2024-11-10 14:59:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-10 14:59:30,084 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-10 14:59:30,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:30,086 INFO L225 Difference]: With dead ends: 795 [2024-11-10 14:59:30,086 INFO L226 Difference]: Without dead ends: 702 [2024-11-10 14:59:30,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=262, Invalid=3520, Unknown=0, NotChecked=0, Total=3782 [2024-11-10 14:59:30,088 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 144 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:30,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2282 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-10 14:59:30,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-11-10 14:59:30,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 548. [2024-11-10 14:59:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 544 states have (on average 1.1084558823529411) internal successors, (603), 547 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:30,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 603 transitions. [2024-11-10 14:59:30,106 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 603 transitions. Word has length 55 [2024-11-10 14:59:30,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:30,106 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 603 transitions. [2024-11-10 14:59:30,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 603 transitions. [2024-11-10 14:59:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-10 14:59:30,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:30,107 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:30,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-10 14:59:30,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-10 14:59:30,308 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:30,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:30,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1612893498, now seen corresponding path program 4 times [2024-11-10 14:59:30,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:30,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864006516] [2024-11-10 14:59:30,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:30,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:30,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:30,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864006516] [2024-11-10 14:59:30,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864006516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:30,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144064658] [2024-11-10 14:59:30,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 14:59:30,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:30,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:30,978 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:30,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-10 14:59:31,112 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 14:59:31,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:31,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-10 14:59:31,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:31,238 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 14 treesize of output 10 [2024-11-10 14:59:31,770 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-10 14:59:31,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 26 [2024-11-10 14:59:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:59:31,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:32,154 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 44 treesize of output 38 [2024-11-10 14:59:32,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 14:59:32,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 34 [2024-11-10 14:59:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:59:32,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144064658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:32,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:32,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 47 [2024-11-10 14:59:32,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952699829] [2024-11-10 14:59:32,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:32,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-10 14:59:32,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:32,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-10 14:59:32,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2024-11-10 14:59:32,380 INFO L87 Difference]: Start difference. First operand 548 states and 603 transitions. Second operand has 47 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 47 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:33,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:33,767 INFO L93 Difference]: Finished difference Result 841 states and 916 transitions. [2024-11-10 14:59:33,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-10 14:59:33,768 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 47 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-10 14:59:33,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:33,770 INFO L225 Difference]: With dead ends: 841 [2024-11-10 14:59:33,770 INFO L226 Difference]: Without dead ends: 727 [2024-11-10 14:59:33,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1341 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=492, Invalid=4910, Unknown=0, NotChecked=0, Total=5402 [2024-11-10 14:59:33,772 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 99 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:33,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 680 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 14:59:33,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-10 14:59:33,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 644. [2024-11-10 14:59:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 640 states have (on average 1.103125) internal successors, (706), 643 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 706 transitions. [2024-11-10 14:59:33,780 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 706 transitions. Word has length 55 [2024-11-10 14:59:33,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:33,781 INFO L471 AbstractCegarLoop]: Abstraction has 644 states and 706 transitions. [2024-11-10 14:59:33,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 47 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 706 transitions. [2024-11-10 14:59:33,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-10 14:59:33,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:33,782 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:33,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:33,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:33,987 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:33,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:33,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1635186522, now seen corresponding path program 3 times [2024-11-10 14:59:33,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:33,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952337886] [2024-11-10 14:59:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:33,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:59:34,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:34,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952337886] [2024-11-10 14:59:34,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952337886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:34,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546737530] [2024-11-10 14:59:34,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 14:59:34,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:34,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:34,650 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:34,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-10 14:59:34,778 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 14:59:34,778 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:34,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-10 14:59:34,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:34,827 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-10 14:59:34,827 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 1 case distinctions, treesize of input 13 treesize of output 11 [2024-11-10 14:59:34,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-10 14:59:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:36,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:37,539 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 14:59:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:37,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546737530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:37,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:37,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 20] total 53 [2024-11-10 14:59:37,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324615437] [2024-11-10 14:59:37,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:37,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-10 14:59:37,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-10 14:59:37,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=2513, Unknown=0, NotChecked=0, Total=2862 [2024-11-10 14:59:37,644 INFO L87 Difference]: Start difference. First operand 644 states and 706 transitions. Second operand has 54 states, 53 states have (on average 3.0377358490566038) internal successors, (161), 54 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:39,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:39,492 INFO L93 Difference]: Finished difference Result 779 states and 843 transitions. [2024-11-10 14:59:39,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-10 14:59:39,493 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.0377358490566038) internal successors, (161), 54 states have internal predecessors, (161), 0 states have call successors, (0), 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 56 [2024-11-10 14:59:39,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:39,495 INFO L225 Difference]: With dead ends: 779 [2024-11-10 14:59:39,495 INFO L226 Difference]: Without dead ends: 735 [2024-11-10 14:59:39,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2089 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=999, Invalid=6311, Unknown=0, NotChecked=0, Total=7310 [2024-11-10 14:59:39,498 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 314 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:39,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 454 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 14:59:39,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-10 14:59:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 642. [2024-11-10 14:59:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 638 states have (on average 1.1065830721003134) internal successors, (706), 641 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 706 transitions. [2024-11-10 14:59:39,507 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 706 transitions. Word has length 56 [2024-11-10 14:59:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:39,509 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 706 transitions. [2024-11-10 14:59:39,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.0377358490566038) internal successors, (161), 54 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:39,509 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 706 transitions. [2024-11-10 14:59:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-10 14:59:39,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:39,511 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:39,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:39,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:39,711 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:39,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:39,712 INFO L85 PathProgramCache]: Analyzing trace with hash -884317305, now seen corresponding path program 5 times [2024-11-10 14:59:39,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:39,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628058641] [2024-11-10 14:59:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:39,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 32 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:40,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:40,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628058641] [2024-11-10 14:59:40,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628058641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:40,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882827011] [2024-11-10 14:59:40,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 14:59:40,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:40,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:40,136 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:40,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-10 14:59:40,290 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-10 14:59:40,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:40,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-10 14:59:40,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 50 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:40,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:40,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-10 14:59:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 50 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:40,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882827011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:40,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:40,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 40 [2024-11-10 14:59:40,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322590178] [2024-11-10 14:59:40,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:40,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-10 14:59:40,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-10 14:59:40,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1416, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 14:59:40,955 INFO L87 Difference]: Start difference. First operand 642 states and 706 transitions. Second operand has 41 states, 40 states have (on average 3.75) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:41,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:41,419 INFO L93 Difference]: Finished difference Result 869 states and 945 transitions. [2024-11-10 14:59:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 14:59:41,420 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 3.75) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-10 14:59:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:41,422 INFO L225 Difference]: With dead ends: 869 [2024-11-10 14:59:41,422 INFO L226 Difference]: Without dead ends: 851 [2024-11-10 14:59:41,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=246, Invalid=1476, Unknown=0, NotChecked=0, Total=1722 [2024-11-10 14:59:41,422 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 133 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:41,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1139 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 14:59:41,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2024-11-10 14:59:41,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 638. [2024-11-10 14:59:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 634 states have (on average 1.108832807570978) internal successors, (703), 637 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 703 transitions. [2024-11-10 14:59:41,431 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 703 transitions. Word has length 59 [2024-11-10 14:59:41,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:41,432 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 703 transitions. [2024-11-10 14:59:41,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 3.75) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 703 transitions. [2024-11-10 14:59:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-10 14:59:41,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:41,433 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:41,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-10 14:59:41,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:41,638 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:41,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1140190586, now seen corresponding path program 4 times [2024-11-10 14:59:41,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:41,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612534054] [2024-11-10 14:59:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:41,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:42,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612534054] [2024-11-10 14:59:42,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612534054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520510441] [2024-11-10 14:59:42,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 14:59:42,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:42,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:42,171 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:42,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-10 14:59:42,317 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 14:59:42,318 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:42,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-10 14:59:42,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:42,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-10 14:59:42,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-10 14:59:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:43,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:44,169 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 14:59:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:44,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520510441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:44,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:44,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 19] total 52 [2024-11-10 14:59:44,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070059775] [2024-11-10 14:59:44,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:44,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-10 14:59:44,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-10 14:59:44,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=2405, Unknown=0, NotChecked=0, Total=2756 [2024-11-10 14:59:44,282 INFO L87 Difference]: Start difference. First operand 638 states and 703 transitions. Second operand has 53 states, 52 states have (on average 3.3653846153846154) internal successors, (175), 53 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:45,760 INFO L93 Difference]: Finished difference Result 947 states and 1020 transitions. [2024-11-10 14:59:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-10 14:59:45,760 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 3.3653846153846154) internal successors, (175), 53 states have internal predecessors, (175), 0 states have call successors, (0), 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 60 [2024-11-10 14:59:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:45,762 INFO L225 Difference]: With dead ends: 947 [2024-11-10 14:59:45,762 INFO L226 Difference]: Without dead ends: 865 [2024-11-10 14:59:45,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=715, Invalid=4541, Unknown=0, NotChecked=0, Total=5256 [2024-11-10 14:59:45,763 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 282 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:45,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 971 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-10 14:59:45,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2024-11-10 14:59:45,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 621. [2024-11-10 14:59:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 617 states have (on average 1.106969205834684) internal successors, (683), 620 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 683 transitions. [2024-11-10 14:59:45,771 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 683 transitions. Word has length 60 [2024-11-10 14:59:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:45,772 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 683 transitions. [2024-11-10 14:59:45,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 3.3653846153846154) internal successors, (175), 53 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 683 transitions. [2024-11-10 14:59:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-10 14:59:45,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:45,773 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:45,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:45,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:45,974 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:45,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:45,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1731812482, now seen corresponding path program 7 times [2024-11-10 14:59:45,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:45,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910131027] [2024-11-10 14:59:45,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:45,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 32 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:46,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:46,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910131027] [2024-11-10 14:59:46,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910131027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:46,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998760251] [2024-11-10 14:59:46,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 14:59:46,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:46,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:46,767 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:46,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-10 14:59:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:46,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-10 14:59:46,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:47,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 14:59:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 14 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:47,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:47,379 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 18 treesize of output 16 [2024-11-10 14:59:47,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-10 14:59:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 14 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:47,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998760251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:47,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:47,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 39 [2024-11-10 14:59:47,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286525088] [2024-11-10 14:59:47,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:47,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-10 14:59:47,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:47,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-10 14:59:47,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1388, Unknown=0, NotChecked=0, Total=1482 [2024-11-10 14:59:47,512 INFO L87 Difference]: Start difference. First operand 621 states and 683 transitions. Second operand has 39 states, 39 states have (on average 3.2051282051282053) internal successors, (125), 39 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:49,479 INFO L93 Difference]: Finished difference Result 1050 states and 1131 transitions. [2024-11-10 14:59:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-10 14:59:49,480 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.2051282051282053) internal successors, (125), 39 states have internal predecessors, (125), 0 states have call successors, (0), 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 62 [2024-11-10 14:59:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:49,482 INFO L225 Difference]: With dead ends: 1050 [2024-11-10 14:59:49,482 INFO L226 Difference]: Without dead ends: 948 [2024-11-10 14:59:49,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=311, Invalid=4659, Unknown=0, NotChecked=0, Total=4970 [2024-11-10 14:59:49,483 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 154 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:49,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 2706 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-10 14:59:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2024-11-10 14:59:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 722. [2024-11-10 14:59:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 718 states have (on average 1.1044568245125348) internal successors, (793), 721 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 793 transitions. [2024-11-10 14:59:49,494 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 793 transitions. Word has length 62 [2024-11-10 14:59:49,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:49,494 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 793 transitions. [2024-11-10 14:59:49,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.2051282051282053) internal successors, (125), 39 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:49,495 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 793 transitions. [2024-11-10 14:59:49,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-10 14:59:49,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:49,496 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:49,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:49,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-10 14:59:49,697 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:49,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:49,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1182380148, now seen corresponding path program 2 times [2024-11-10 14:59:49,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:49,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084390677] [2024-11-10 14:59:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:49,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:59:50,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:50,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084390677] [2024-11-10 14:59:50,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084390677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:50,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847457783] [2024-11-10 14:59:50,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:59:50,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:50,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:50,473 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:50,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-10 14:59:50,638 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:59:50,638 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:50,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-10 14:59:50,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:50,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 14:59:50,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-10 14:59:50,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-10 14:59:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:59:51,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:59:52,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847457783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:52,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:52,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 47 [2024-11-10 14:59:52,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320753505] [2024-11-10 14:59:52,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:52,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-10 14:59:52,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:52,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-10 14:59:52,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2012, Unknown=0, NotChecked=0, Total=2256 [2024-11-10 14:59:52,064 INFO L87 Difference]: Start difference. First operand 722 states and 793 transitions. Second operand has 48 states, 47 states have (on average 3.4893617021276597) internal successors, (164), 48 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:53,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:53,990 INFO L93 Difference]: Finished difference Result 918 states and 991 transitions. [2024-11-10 14:59:53,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-10 14:59:53,991 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.4893617021276597) internal successors, (164), 48 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-10 14:59:53,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:53,992 INFO L225 Difference]: With dead ends: 918 [2024-11-10 14:59:53,993 INFO L226 Difference]: Without dead ends: 880 [2024-11-10 14:59:53,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2082 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=899, Invalid=6933, Unknown=0, NotChecked=0, Total=7832 [2024-11-10 14:59:53,994 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 282 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:53,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 862 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-10 14:59:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2024-11-10 14:59:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 729. [2024-11-10 14:59:54,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 725 states have (on average 1.1048275862068966) internal successors, (801), 728 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:54,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 801 transitions. [2024-11-10 14:59:54,004 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 801 transitions. Word has length 63 [2024-11-10 14:59:54,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:54,004 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 801 transitions. [2024-11-10 14:59:54,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.4893617021276597) internal successors, (164), 48 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:54,004 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 801 transitions. [2024-11-10 14:59:54,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-10 14:59:54,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:54,005 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:54,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-10 14:59:54,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-10 14:59:54,210 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:54,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:54,210 INFO L85 PathProgramCache]: Analyzing trace with hash -483001530, now seen corresponding path program 5 times [2024-11-10 14:59:54,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:54,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514503008] [2024-11-10 14:59:54,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:54,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 14:59:54,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:54,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514503008] [2024-11-10 14:59:54,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514503008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:54,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904637590] [2024-11-10 14:59:54,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 14:59:54,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:54,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:54,588 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:54,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-10 14:59:54,766 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-10 14:59:54,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:54,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-10 14:59:54,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:54,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 14:59:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 8 proven. 37 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 14:59:54,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 8 proven. 37 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 14:59:55,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904637590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:55,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:55,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2024-11-10 14:59:55,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206099001] [2024-11-10 14:59:55,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:55,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-10 14:59:55,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-10 14:59:55,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2024-11-10 14:59:55,336 INFO L87 Difference]: Start difference. First operand 729 states and 801 transitions. Second operand has 32 states, 31 states have (on average 4.32258064516129) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:55,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:55,629 INFO L93 Difference]: Finished difference Result 824 states and 894 transitions. [2024-11-10 14:59:55,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 14:59:55,630 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.32258064516129) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-10 14:59:55,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:55,631 INFO L225 Difference]: With dead ends: 824 [2024-11-10 14:59:55,631 INFO L226 Difference]: Without dead ends: 824 [2024-11-10 14:59:55,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 14:59:55,632 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:55,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 514 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 14:59:55,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-11-10 14:59:55,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 766. [2024-11-10 14:59:55,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 762 states have (on average 1.099737532808399) internal successors, (838), 765 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:55,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 838 transitions. [2024-11-10 14:59:55,642 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 838 transitions. Word has length 63 [2024-11-10 14:59:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:55,642 INFO L471 AbstractCegarLoop]: Abstraction has 766 states and 838 transitions. [2024-11-10 14:59:55,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.32258064516129) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 838 transitions. [2024-11-10 14:59:55,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-10 14:59:55,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:55,644 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:55,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-10 14:59:55,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-10 14:59:55,845 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:55,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:55,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1723998341, now seen corresponding path program 6 times [2024-11-10 14:59:55,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:55,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375168459] [2024-11-10 14:59:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 50 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:56,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:56,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375168459] [2024-11-10 14:59:56,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375168459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:56,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722339416] [2024-11-10 14:59:56,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 14:59:56,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:56,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:56,278 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:56,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-10 14:59:56,458 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-10 14:59:56,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:56,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-10 14:59:56,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 72 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:56,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:57,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-10 14:59:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 72 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:57,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722339416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:57,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:57,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 46 [2024-11-10 14:59:57,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420157979] [2024-11-10 14:59:57,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:57,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-10 14:59:57,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:57,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-10 14:59:57,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1841, Unknown=0, NotChecked=0, Total=2162 [2024-11-10 14:59:57,200 INFO L87 Difference]: Start difference. First operand 766 states and 838 transitions. Second operand has 47 states, 46 states have (on average 3.3260869565217392) internal successors, (153), 47 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:57,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:57,706 INFO L93 Difference]: Finished difference Result 1040 states and 1125 transitions. [2024-11-10 14:59:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 14:59:57,706 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 3.3260869565217392) internal successors, (153), 47 states have internal predecessors, (153), 0 states have call successors, (0), 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 66 [2024-11-10 14:59:57,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:57,709 INFO L225 Difference]: With dead ends: 1040 [2024-11-10 14:59:57,709 INFO L226 Difference]: Without dead ends: 1022 [2024-11-10 14:59:57,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 95 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=338, Invalid=1918, Unknown=0, NotChecked=0, Total=2256 [2024-11-10 14:59:57,710 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 167 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:57,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 1233 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 14:59:57,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2024-11-10 14:59:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 764. [2024-11-10 14:59:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 760 states have (on average 1.1013157894736842) internal successors, (837), 763 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 837 transitions. [2024-11-10 14:59:57,720 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 837 transitions. Word has length 66 [2024-11-10 14:59:57,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:57,720 INFO L471 AbstractCegarLoop]: Abstraction has 764 states and 837 transitions. [2024-11-10 14:59:57,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 3.3260869565217392) internal successors, (153), 47 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 837 transitions. [2024-11-10 14:59:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-10 14:59:57,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:57,722 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:57,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:57,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:57,923 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 14:59:57,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:57,923 INFO L85 PathProgramCache]: Analyzing trace with hash 757662552, now seen corresponding path program 5 times [2024-11-10 14:59:57,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:57,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551049675] [2024-11-10 14:59:57,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:57,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 18 proven. 81 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:58,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:58,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551049675] [2024-11-10 14:59:58,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551049675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:58,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77548396] [2024-11-10 14:59:58,572 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 14:59:58,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:58,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:58,573 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:58,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-10 14:59:58,726 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-10 14:59:58,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:58,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-10 14:59:58,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:58,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-10 14:59:58,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-10 14:59:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:59,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:00,841 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 15:00:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:00,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77548396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:00,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:00,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 19] total 52 [2024-11-10 15:00:00,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838347604] [2024-11-10 15:00:00,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:00,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-10 15:00:00,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:00,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-10 15:00:00,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2411, Unknown=0, NotChecked=0, Total=2756 [2024-11-10 15:00:00,923 INFO L87 Difference]: Start difference. First operand 764 states and 837 transitions. Second operand has 53 states, 52 states have (on average 3.769230769230769) internal successors, (196), 53 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)