./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/20051113-1.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/memsafety/20051113-1.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 2a43a02844acf962bfa6f77d0e1512c06ac1cc2fb3c3905e584a292a069b5426 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:08:15,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:08:15,242 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:08:15,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:08:15,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:08:15,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:08:15,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:08:15,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:08:15,287 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:08:15,288 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:08:15,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:08:15,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:08:15,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:08:15,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:08:15,292 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:08:15,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:08:15,293 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:08:15,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:08:15,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:08:15,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:08:15,297 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:08:15,297 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:08:15,297 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:08:15,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:08:15,298 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:08:15,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:08:15,299 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:08:15,299 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:08:15,299 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:08:15,299 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:08:15,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:08:15,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:08:15,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:08:15,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:08:15,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:08:15,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:08:15,301 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:08:15,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:08:15,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:08:15,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:08:15,303 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:08:15,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:08:15,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a43a02844acf962bfa6f77d0e1512c06ac1cc2fb3c3905e584a292a069b5426 [2024-11-10 15:08:15,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:08:15,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:08:15,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:08:15,611 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:08:15,611 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:08:15,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/20051113-1.i [2024-11-10 15:08:17,039 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:08:17,289 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:08:17,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/20051113-1.i [2024-11-10 15:08:17,309 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33126f917/0aef4b25f52c445ab1ef89c20f1dd943/FLAGd2f9428bc [2024-11-10 15:08:17,327 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33126f917/0aef4b25f52c445ab1ef89c20f1dd943 [2024-11-10 15:08:17,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:08:17,331 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:08:17,335 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:08:17,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:08:17,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:08:17,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51006c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17, skipping insertion in model container [2024-11-10 15:08:17,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,383 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:08:17,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:08:17,763 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:08:17,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:08:17,840 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:08:17,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17 WrapperNode [2024-11-10 15:08:17,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:08:17,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:08:17,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:08:17,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:08:17,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,884 INFO L138 Inliner]: procedures = 125, calls = 23, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2024-11-10 15:08:17,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:08:17,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:08:17,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:08:17,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:08:17,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,899 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,912 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-11-10 15:08:17,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,919 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:08:17,930 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:08:17,930 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:08:17,930 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:08:17,931 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:08:17,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:17,970 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 15:08:17,974 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 15:08:18,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 15:08:18,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 15:08:18,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 15:08:18,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 15:08:18,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 15:08:18,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 15:08:18,024 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_abort [2024-11-10 15:08:18,024 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_abort [2024-11-10 15:08:18,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 15:08:18,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 15:08:18,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:08:18,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:08:18,150 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:08:18,152 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:08:18,428 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-10 15:08:18,429 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:08:18,451 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:08:18,452 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:08:18,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:08:18 BoogieIcfgContainer [2024-11-10 15:08:18,452 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:08:18,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:08:18,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:08:18,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:08:18,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:08:17" (1/3) ... [2024-11-10 15:08:18,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156996a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:08:18, skipping insertion in model container [2024-11-10 15:08:18,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17" (2/3) ... [2024-11-10 15:08:18,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156996a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:08:18, skipping insertion in model container [2024-11-10 15:08:18,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:08:18" (3/3) ... [2024-11-10 15:08:18,468 INFO L112 eAbstractionObserver]: Analyzing ICFG 20051113-1.i [2024-11-10 15:08:18,486 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:08:18,487 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-11-10 15:08:18,542 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:08:18,549 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;@33d83c86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:08:18,550 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-10 15:08:18,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 65 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-10 15:08:18,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:18,560 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-10 15:08:18,560 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:18,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:18,567 INFO L85 PathProgramCache]: Analyzing trace with hash 102247, now seen corresponding path program 1 times [2024-11-10 15:08:18,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:18,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260344586] [2024-11-10 15:08:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:18,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:18,769 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 15:08:18,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260344586] [2024-11-10 15:08:18,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260344586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:18,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:18,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:08:18,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663572436] [2024-11-10 15:08:18,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:18,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:08:18,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:08:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:08:18,819 INFO L87 Difference]: Start difference. First operand has 67 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 65 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 15:08:18,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:18,917 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2024-11-10 15:08:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:08:18,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-10 15:08:18,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:18,926 INFO L225 Difference]: With dead ends: 66 [2024-11-10 15:08:18,927 INFO L226 Difference]: Without dead ends: 63 [2024-11-10 15:08:18,928 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 15:08:18,932 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 5 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:18,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 102 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:08:18,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-10 15:08:18,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-10 15:08:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 61 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2024-11-10 15:08:18,975 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 3 [2024-11-10 15:08:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:18,976 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2024-11-10 15:08:18,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 15:08:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2024-11-10 15:08:18,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-10 15:08:18,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:18,977 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-10 15:08:18,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:08:18,977 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:18,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:18,978 INFO L85 PathProgramCache]: Analyzing trace with hash 3169695, now seen corresponding path program 1 times [2024-11-10 15:08:18,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:18,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304150766] [2024-11-10 15:08:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:18,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:19,152 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 15:08:19,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:19,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304150766] [2024-11-10 15:08:19,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304150766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:19,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:19,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:08:19,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281277616] [2024-11-10 15:08:19,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:19,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:08:19,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:19,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:08:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:08:19,160 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states 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 15:08:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:19,230 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2024-11-10 15:08:19,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:08:19,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-10 15:08:19,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:19,232 INFO L225 Difference]: With dead ends: 62 [2024-11-10 15:08:19,233 INFO L226 Difference]: Without dead ends: 62 [2024-11-10 15:08:19,233 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 15:08:19,235 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:19,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 99 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:08:19,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-10 15:08:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-10 15:08:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 36 states have (on average 1.75) internal successors, (63), 60 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2024-11-10 15:08:19,242 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 4 [2024-11-10 15:08:19,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:19,242 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2024-11-10 15:08:19,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states 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 15:08:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2024-11-10 15:08:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:08:19,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:19,243 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:19,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:08:19,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:19,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:19,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1886661829, now seen corresponding path program 1 times [2024-11-10 15:08:19,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:19,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123991461] [2024-11-10 15:08:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:19,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:19,355 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 15:08:19,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:19,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123991461] [2024-11-10 15:08:19,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123991461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:19,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:19,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:08:19,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729798163] [2024-11-10 15:08:19,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:19,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:08:19,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:19,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:08:19,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:08:19,359 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 15:08:19,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:19,475 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2024-11-10 15:08:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:08:19,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 15:08:19,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:19,477 INFO L225 Difference]: With dead ends: 55 [2024-11-10 15:08:19,477 INFO L226 Difference]: Without dead ends: 55 [2024-11-10 15:08:19,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:08:19,478 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 23 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:19,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 100 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:08:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-10 15:08:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-10 15:08:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 53 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2024-11-10 15:08:19,491 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 8 [2024-11-10 15:08:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:19,492 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2024-11-10 15:08:19,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 15:08:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2024-11-10 15:08:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:08:19,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:19,493 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:19,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 15:08:19,494 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:19,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:19,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1886661828, now seen corresponding path program 1 times [2024-11-10 15:08:19,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:19,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129170618] [2024-11-10 15:08:19,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:19,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:19,634 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 15:08:19,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:19,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129170618] [2024-11-10 15:08:19,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129170618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:19,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:19,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:08:19,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111975515] [2024-11-10 15:08:19,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:19,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:08:19,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:08:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:08:19,637 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. 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 15:08:19,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:19,690 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2024-11-10 15:08:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:08:19,692 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 15:08:19,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:19,693 INFO L225 Difference]: With dead ends: 48 [2024-11-10 15:08:19,694 INFO L226 Difference]: Without dead ends: 48 [2024-11-10 15:08:19,695 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 15:08:19,696 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 23 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:19,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 54 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-10 15:08:19,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-10 15:08:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 46 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2024-11-10 15:08:19,703 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 8 [2024-11-10 15:08:19,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:19,704 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2024-11-10 15:08:19,704 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 15:08:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2024-11-10 15:08:19,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-10 15:08:19,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:19,705 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 15:08:19,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 15:08:19,705 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:19,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:19,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1684742249, now seen corresponding path program 1 times [2024-11-10 15:08:19,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:19,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474417763] [2024-11-10 15:08:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:19,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:19,839 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 15:08:19,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:19,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474417763] [2024-11-10 15:08:19,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474417763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:19,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:19,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:08:19,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631450026] [2024-11-10 15:08:19,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:19,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:08:19,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:19,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:08:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:08:19,842 INFO L87 Difference]: Start difference. First operand 48 states and 53 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 15:08:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:19,909 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2024-11-10 15:08:19,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:08:19,909 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 15:08:19,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:19,910 INFO L225 Difference]: With dead ends: 46 [2024-11-10 15:08:19,910 INFO L226 Difference]: Without dead ends: 46 [2024-11-10 15:08:19,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:08:19,912 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 25 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:19,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 72 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:08:19,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-10 15:08:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-10 15:08:19,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 44 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2024-11-10 15:08:19,916 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 17 [2024-11-10 15:08:19,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:19,917 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2024-11-10 15:08:19,917 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 15:08:19,917 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2024-11-10 15:08:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-10 15:08:19,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:19,918 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 15:08:19,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 15:08:19,918 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:19,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1684742248, now seen corresponding path program 1 times [2024-11-10 15:08:19,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:19,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836203463] [2024-11-10 15:08:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:19,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:20,116 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 15:08:20,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:20,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836203463] [2024-11-10 15:08:20,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836203463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:20,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:20,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:08:20,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514044360] [2024-11-10 15:08:20,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:20,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:08:20,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:20,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:08:20,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:08:20,121 INFO L87 Difference]: Start difference. First operand 46 states and 51 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 15:08:20,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:20,191 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-11-10 15:08:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:08:20,191 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 15:08:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:20,192 INFO L225 Difference]: With dead ends: 45 [2024-11-10 15:08:20,193 INFO L226 Difference]: Without dead ends: 45 [2024-11-10 15:08:20,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:08:20,194 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 19 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:20,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 74 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:08:20,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-10 15:08:20,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-10 15:08:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 43 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2024-11-10 15:08:20,205 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 17 [2024-11-10 15:08:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:20,206 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2024-11-10 15:08:20,206 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 15:08:20,206 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2024-11-10 15:08:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-10 15:08:20,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:20,207 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:20,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 15:08:20,207 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:20,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash 165369492, now seen corresponding path program 1 times [2024-11-10 15:08:20,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:20,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852161000] [2024-11-10 15:08:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:20,417 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 15:08:20,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:20,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852161000] [2024-11-10 15:08:20,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852161000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:20,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:20,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:08:20,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666829428] [2024-11-10 15:08:20,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:20,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:08:20,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:20,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:08:20,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:08:20,420 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:20,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:20,482 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2024-11-10 15:08:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:08:20,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-10 15:08:20,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:20,484 INFO L225 Difference]: With dead ends: 50 [2024-11-10 15:08:20,484 INFO L226 Difference]: Without dead ends: 50 [2024-11-10 15:08:20,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:08:20,485 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:20,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 73 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:20,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-10 15:08:20,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2024-11-10 15:08:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 47 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:20,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2024-11-10 15:08:20,489 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 19 [2024-11-10 15:08:20,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:20,489 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2024-11-10 15:08:20,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:20,490 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2024-11-10 15:08:20,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 15:08:20,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:20,490 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] [2024-11-10 15:08:20,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 15:08:20,491 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:20,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:20,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1781873958, now seen corresponding path program 1 times [2024-11-10 15:08:20,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:20,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625191779] [2024-11-10 15:08:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:20,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:20,554 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 15:08:20,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:20,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625191779] [2024-11-10 15:08:20,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625191779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:20,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:20,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:08:20,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528018689] [2024-11-10 15:08:20,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:20,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:08:20,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:20,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:08:20,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:08:20,556 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:20,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:20,596 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-11-10 15:08:20,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:08:20,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-10 15:08:20,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:20,597 INFO L225 Difference]: With dead ends: 47 [2024-11-10 15:08:20,597 INFO L226 Difference]: Without dead ends: 47 [2024-11-10 15:08:20,597 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 15:08:20,598 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 17 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:20,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-10 15:08:20,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-10 15:08:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.225) internal successors, (49), 45 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:20,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-11-10 15:08:20,602 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 24 [2024-11-10 15:08:20,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:20,602 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-11-10 15:08:20,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-11-10 15:08:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 15:08:20,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:20,603 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] [2024-11-10 15:08:20,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 15:08:20,603 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:20,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1781873959, now seen corresponding path program 1 times [2024-11-10 15:08:20,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:20,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648262172] [2024-11-10 15:08:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:20,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:20,672 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 15:08:20,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:20,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648262172] [2024-11-10 15:08:20,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648262172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:20,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:20,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 15:08:20,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049897968] [2024-11-10 15:08:20,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:20,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:08:20,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:20,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:08:20,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:08:20,675 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:20,703 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2024-11-10 15:08:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:08:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-10 15:08:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:20,705 INFO L225 Difference]: With dead ends: 51 [2024-11-10 15:08:20,707 INFO L226 Difference]: Without dead ends: 51 [2024-11-10 15:08:20,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:08:20,708 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 2 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:20,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 172 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:20,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-10 15:08:20,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2024-11-10 15:08:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 48 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2024-11-10 15:08:20,713 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 24 [2024-11-10 15:08:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:20,714 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2024-11-10 15:08:20,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:20,715 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2024-11-10 15:08:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 15:08:20,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:20,715 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] [2024-11-10 15:08:20,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 15:08:20,716 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:20,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:20,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1565160568, now seen corresponding path program 1 times [2024-11-10 15:08:20,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:20,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93308770] [2024-11-10 15:08:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:20,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:20,877 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 15:08:20,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:20,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93308770] [2024-11-10 15:08:20,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93308770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:20,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519882934] [2024-11-10 15:08:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:20,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:20,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:20,881 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 15:08:20,882 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 15:08:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:20,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 15:08:20,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:21,222 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 15:08:21,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:21,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:21,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2024-11-10 15:08:21,546 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 15:08:21,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519882934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:21,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:21,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-11-10 15:08:21,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898212565] [2024-11-10 15:08:21,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:21,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 15:08:21,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:21,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 15:08:21,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:08:21,549 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 15 states, 14 states have (on average 5.0) internal successors, (70), 15 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 15:08:21,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:21,729 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2024-11-10 15:08:21,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:08:21,729 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-10 15:08:21,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:21,730 INFO L225 Difference]: With dead ends: 60 [2024-11-10 15:08:21,730 INFO L226 Difference]: Without dead ends: 60 [2024-11-10 15:08:21,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-10 15:08:21,731 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 38 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:21,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 142 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:08:21,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-10 15:08:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-10 15:08:21,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 58 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-10 15:08:21,738 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 24 [2024-11-10 15:08:21,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:21,738 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-10 15:08:21,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 15 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 15:08:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-10 15:08:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 15:08:21,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:21,739 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 15:08:21,759 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 15:08:21,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 15:08:21,940 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:21,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:21,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1377420277, now seen corresponding path program 1 times [2024-11-10 15:08:21,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:21,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233013014] [2024-11-10 15:08:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:21,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:22,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-10 15:08:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:22,122 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 15:08:22,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:22,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233013014] [2024-11-10 15:08:22,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233013014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:22,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:22,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:08:22,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928845437] [2024-11-10 15:08:22,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:22,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:08:22,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:08:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:08:22,125 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-10 15:08:22,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:22,168 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-10 15:08:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:08:22,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-10 15:08:22,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:22,170 INFO L225 Difference]: With dead ends: 59 [2024-11-10 15:08:22,170 INFO L226 Difference]: Without dead ends: 59 [2024-11-10 15:08:22,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 15:08:22,171 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:22,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 64 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:22,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-10 15:08:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-10 15:08:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 57 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-11-10 15:08:22,176 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 27 [2024-11-10 15:08:22,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:22,177 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-11-10 15:08:22,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-10 15:08:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-11-10 15:08:22,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-10 15:08:22,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:22,178 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] [2024-11-10 15:08:22,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 15:08:22,179 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:22,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:22,179 INFO L85 PathProgramCache]: Analyzing trace with hash -850960377, now seen corresponding path program 1 times [2024-11-10 15:08:22,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:22,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773287044] [2024-11-10 15:08:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:22,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:22,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-10 15:08:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:22,329 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 15:08:22,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:22,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773287044] [2024-11-10 15:08:22,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773287044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:22,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:22,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:08:22,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609972697] [2024-11-10 15:08:22,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:22,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:08:22,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:22,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:08:22,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:08:22,332 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-10 15:08:22,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:22,379 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2024-11-10 15:08:22,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:08:22,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-10 15:08:22,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:22,381 INFO L225 Difference]: With dead ends: 64 [2024-11-10 15:08:22,381 INFO L226 Difference]: Without dead ends: 64 [2024-11-10 15:08:22,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 15:08:22,382 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:22,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 61 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:22,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-10 15:08:22,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-11-10 15:08:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 61 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-11-10 15:08:22,387 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 29 [2024-11-10 15:08:22,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:22,388 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-11-10 15:08:22,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-10 15:08:22,388 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-11-10 15:08:22,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-10 15:08:22,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:22,389 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, 1, 1, 1, 1] [2024-11-10 15:08:22,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 15:08:22,389 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:22,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:22,390 INFO L85 PathProgramCache]: Analyzing trace with hash 152963074, now seen corresponding path program 1 times [2024-11-10 15:08:22,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:22,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339682498] [2024-11-10 15:08:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:22,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:22,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-10 15:08:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:22,692 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 15:08:22,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:22,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339682498] [2024-11-10 15:08:22,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339682498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:22,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:22,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 15:08:22,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139791576] [2024-11-10 15:08:22,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:22,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:08:22,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:22,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:08:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:08:22,694 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-10 15:08:22,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:22,753 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2024-11-10 15:08:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:08:22,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-10 15:08:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:22,754 INFO L225 Difference]: With dead ends: 64 [2024-11-10 15:08:22,754 INFO L226 Difference]: Without dead ends: 64 [2024-11-10 15:08:22,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 15:08:22,755 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:22,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 108 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-10 15:08:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-11-10 15:08:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 61 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2024-11-10 15:08:22,760 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 34 [2024-11-10 15:08:22,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:22,761 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2024-11-10 15:08:22,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-10 15:08:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2024-11-10 15:08:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-10 15:08:22,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:22,764 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, 1, 1, 1] [2024-11-10 15:08:22,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 15:08:22,764 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:22,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1100895843, now seen corresponding path program 1 times [2024-11-10 15:08:22,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:22,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089909433] [2024-11-10 15:08:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:22,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:23,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-10 15:08:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 15:08:23,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089909433] [2024-11-10 15:08:23,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089909433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:23,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:23,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 15:08:23,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602187910] [2024-11-10 15:08:23,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:23,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:08:23,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:23,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:08:23,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:08:23,220 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-10 15:08:23,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:23,285 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2024-11-10 15:08:23,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:08:23,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-10 15:08:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:23,287 INFO L225 Difference]: With dead ends: 60 [2024-11-10 15:08:23,287 INFO L226 Difference]: Without dead ends: 60 [2024-11-10 15:08:23,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:08:23,287 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 17 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:23,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 85 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:23,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-10 15:08:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-10 15:08:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 58 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:23,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2024-11-10 15:08:23,291 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 34 [2024-11-10 15:08:23,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:23,291 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2024-11-10 15:08:23,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-10 15:08:23,291 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2024-11-10 15:08:23,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-10 15:08:23,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:23,292 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:23,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 15:08:23,292 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:23,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:23,297 INFO L85 PathProgramCache]: Analyzing trace with hash 220062472, now seen corresponding path program 2 times [2024-11-10 15:08:23,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:23,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212404453] [2024-11-10 15:08:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:23,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:08:23,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:23,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212404453] [2024-11-10 15:08:23,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212404453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:23,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223671922] [2024-11-10 15:08:23,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:08:23,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:23,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:23,677 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 15:08:23,679 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 15:08:23,761 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 15:08:23,762 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:08:23,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 15:08:23,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-10 15:08:23,796 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:08:23,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223671922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:23,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:08:23,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-10 15:08:23,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959392216] [2024-11-10 15:08:23,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:23,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:08:23,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:23,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:08:23,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:08:23,798 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 15:08:23,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:23,813 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2024-11-10 15:08:23,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:08:23,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 34 [2024-11-10 15:08:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:23,814 INFO L225 Difference]: With dead ends: 61 [2024-11-10 15:08:23,814 INFO L226 Difference]: Without dead ends: 61 [2024-11-10 15:08:23,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:08:23,815 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 2 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:23,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 124 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:23,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-10 15:08:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-10 15:08:23,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 59 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2024-11-10 15:08:23,822 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 34 [2024-11-10 15:08:23,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:23,823 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2024-11-10 15:08:23,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 15:08:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2024-11-10 15:08:23,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-10 15:08:23,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:23,824 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:23,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 15:08:24,024 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,SelfDestructingSolverStorable14 [2024-11-10 15:08:24,025 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:24,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:24,025 INFO L85 PathProgramCache]: Analyzing trace with hash 249638481, now seen corresponding path program 1 times [2024-11-10 15:08:24,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:24,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427604559] [2024-11-10 15:08:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:24,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:08:24,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:24,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427604559] [2024-11-10 15:08:24,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427604559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:24,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993446655] [2024-11-10 15:08:24,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:24,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:24,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:24,389 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 15:08:24,390 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 15:08:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:24,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-10 15:08:24,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:24,492 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 15:08:24,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-10 15:08:24,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:24,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2024-11-10 15:08:24,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:24,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-10 15:08:24,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:24,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-10 15:08:24,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:24,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 47 [2024-11-10 15:08:24,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:24,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-10 15:08:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:08:25,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:08:25,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993446655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:25,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:25,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 8] total 21 [2024-11-10 15:08:25,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53366568] [2024-11-10 15:08:25,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:25,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 15:08:25,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:25,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 15:08:25,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:08:25,191 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 15:08:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:25,523 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2024-11-10 15:08:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:08:25,523 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 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 15:08:25,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:25,524 INFO L225 Difference]: With dead ends: 59 [2024-11-10 15:08:25,524 INFO L226 Difference]: Without dead ends: 59 [2024-11-10 15:08:25,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2024-11-10 15:08:25,525 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 67 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:25,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 182 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:08:25,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-10 15:08:25,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-10 15:08:25,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 57 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2024-11-10 15:08:25,528 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 35 [2024-11-10 15:08:25,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:25,528 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2024-11-10 15:08:25,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 15:08:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2024-11-10 15:08:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-10 15:08:25,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:25,529 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:25,546 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 15:08:25,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:25,731 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:25,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash -831970876, now seen corresponding path program 1 times [2024-11-10 15:08:25,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:25,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268987042] [2024-11-10 15:08:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:25,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 15:08:26,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:26,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268987042] [2024-11-10 15:08:26,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268987042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:26,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965289481] [2024-11-10 15:08:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:26,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:26,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:26,084 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 15:08:26,086 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 15:08:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:26,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 15:08:26,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 15:08:26,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:26,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:26,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2024-11-10 15:08:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 15:08:26,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965289481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:26,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:26,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 18 [2024-11-10 15:08:26,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569659879] [2024-11-10 15:08:26,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:26,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 15:08:26,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:26,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 15:08:26,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-10 15:08:26,623 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 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 15:08:26,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:26,945 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2024-11-10 15:08:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:08:26,946 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 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 37 [2024-11-10 15:08:26,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:26,946 INFO L225 Difference]: With dead ends: 69 [2024-11-10 15:08:26,946 INFO L226 Difference]: Without dead ends: 69 [2024-11-10 15:08:26,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2024-11-10 15:08:26,947 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 29 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:26,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 240 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:08:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-10 15:08:26,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-10 15:08:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.125) internal successors, (72), 67 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:26,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2024-11-10 15:08:26,950 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 37 [2024-11-10 15:08:26,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:26,951 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2024-11-10 15:08:26,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 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 15:08:26,951 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2024-11-10 15:08:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-10 15:08:26,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:26,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:26,969 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 15:08:27,155 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,SelfDestructingSolverStorable16 [2024-11-10 15:08:27,156 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:27,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:27,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1233231755, now seen corresponding path program 1 times [2024-11-10 15:08:27,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:27,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20641038] [2024-11-10 15:08:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:27,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 15:08:27,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:27,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20641038] [2024-11-10 15:08:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20641038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:27,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796493080] [2024-11-10 15:08:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:27,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:27,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:27,505 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 15:08:27,506 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 15:08:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:27,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 15:08:27,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:27,610 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 15:08:27,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-10 15:08:27,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-10 15:08:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 15:08:27,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 15:08:27,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796493080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:27,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:27,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2024-11-10 15:08:27,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540524218] [2024-11-10 15:08:27,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:27,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 15:08:27,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 15:08:27,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2024-11-10 15:08:27,952 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 15:08:28,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:28,335 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2024-11-10 15:08:28,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 15:08:28,336 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-10 15:08:28,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:28,337 INFO L225 Difference]: With dead ends: 72 [2024-11-10 15:08:28,337 INFO L226 Difference]: Without dead ends: 72 [2024-11-10 15:08:28,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-11-10 15:08:28,338 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:28,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 358 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:08:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-10 15:08:28,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-10 15:08:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 70 states have internal predecessors, (74), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2024-11-10 15:08:28,343 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 47 [2024-11-10 15:08:28,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:28,343 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2024-11-10 15:08:28,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 15:08:28,343 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2024-11-10 15:08:28,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-10 15:08:28,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:28,344 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:28,361 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 15:08:28,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 15:08:28,545 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:28,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:28,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1788574355, now seen corresponding path program 1 times [2024-11-10 15:08:28,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:28,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19866961] [2024-11-10 15:08:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:28,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:29,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-10 15:08:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-10 15:08:29,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:29,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19866961] [2024-11-10 15:08:29,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19866961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:29,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784386637] [2024-11-10 15:08:29,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:29,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:29,020 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 15:08:29,022 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 15:08:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:29,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-10 15:08:29,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:29,130 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 15:08:29,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-10 15:08:29,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:29,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2024-11-10 15:08:29,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:29,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-10 15:08:29,213 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:29,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-10 15:08:29,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:29,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 47 [2024-11-10 15:08:29,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:29,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-10 15:08:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-10 15:08:29,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-10 15:08:29,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784386637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:29,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:29,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 6] total 21 [2024-11-10 15:08:29,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173775769] [2024-11-10 15:08:29,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:29,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 15:08:29,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:29,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 15:08:29,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:08:29,821 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 15:08:30,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:30,067 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2024-11-10 15:08:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 15:08:30,067 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 55 [2024-11-10 15:08:30,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:30,068 INFO L225 Difference]: With dead ends: 70 [2024-11-10 15:08:30,068 INFO L226 Difference]: Without dead ends: 70 [2024-11-10 15:08:30,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2024-11-10 15:08:30,069 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 13 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:30,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 191 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:08:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-10 15:08:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2024-11-10 15:08:30,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.078125) internal successors, (69), 67 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:30,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-10 15:08:30,076 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 55 [2024-11-10 15:08:30,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:30,076 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-10 15:08:30,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 15:08:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-10 15:08:30,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-10 15:08:30,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:30,078 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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 15:08:30,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 15:08:30,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:30,279 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:30,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:30,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1912913084, now seen corresponding path program 2 times [2024-11-10 15:08:30,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:30,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749568128] [2024-11-10 15:08:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:30,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-10 15:08:30,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:30,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749568128] [2024-11-10 15:08:30,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749568128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:30,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229639498] [2024-11-10 15:08:30,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:08:30,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:30,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:30,780 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 15:08:30,782 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 15:08:30,895 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:08:30,896 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:08:30,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-10 15:08:30,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:30,929 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 15:08:31,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:08:31,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2024-11-10 15:08:31,467 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:08:31,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:08:31,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229639498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:31,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:31,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 32 [2024-11-10 15:08:31,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437031116] [2024-11-10 15:08:31,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:31,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-10 15:08:31,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:31,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-10 15:08:31,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2024-11-10 15:08:31,693 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 32 states, 32 states have (on average 4.25) internal successors, (136), 32 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 15:08:32,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:32,161 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2024-11-10 15:08:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 15:08:32,162 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.25) internal successors, (136), 32 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-10 15:08:32,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:32,162 INFO L225 Difference]: With dead ends: 67 [2024-11-10 15:08:32,163 INFO L226 Difference]: Without dead ends: 67 [2024-11-10 15:08:32,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=412, Invalid=1658, Unknown=0, NotChecked=0, Total=2070 [2024-11-10 15:08:32,164 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 50 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:32,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 366 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:08:32,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-10 15:08:32,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-10 15:08:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 65 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2024-11-10 15:08:32,166 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 57 [2024-11-10 15:08:32,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:32,167 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2024-11-10 15:08:32,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.25) internal successors, (136), 32 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 15:08:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2024-11-10 15:08:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-10 15:08:32,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:32,167 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 15:08:32,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 15:08:32,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:32,368 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:32,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:32,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2072534299, now seen corresponding path program 2 times [2024-11-10 15:08:32,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:32,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246791374] [2024-11-10 15:08:32,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:32,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:08:32,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:32,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246791374] [2024-11-10 15:08:32,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246791374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:32,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112937993] [2024-11-10 15:08:32,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:08:32,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:32,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:32,499 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 15:08:32,501 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 15:08:32,688 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:08:32,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:08:32,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:08:32,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:08:32,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:08:32,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112937993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:32,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:32,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-10 15:08:32,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215921507] [2024-11-10 15:08:32,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:32,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 15:08:32,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:32,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 15:08:32,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:08:32,770 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:32,813 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2024-11-10 15:08:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:08:32,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-10 15:08:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:32,814 INFO L225 Difference]: With dead ends: 70 [2024-11-10 15:08:32,814 INFO L226 Difference]: Without dead ends: 70 [2024-11-10 15:08:32,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:08:32,815 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:32,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 195 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:32,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-10 15:08:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-10 15:08:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 68 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2024-11-10 15:08:32,817 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 62 [2024-11-10 15:08:32,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:32,817 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2024-11-10 15:08:32,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:32,818 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2024-11-10 15:08:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-10 15:08:32,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:32,818 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 15:08:32,835 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 15:08:33,019 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,SelfDestructingSolverStorable20 [2024-11-10 15:08:33,019 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:33,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:33,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1470448014, now seen corresponding path program 3 times [2024-11-10 15:08:33,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:33,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541885063] [2024-11-10 15:08:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:33,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:08:33,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:33,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541885063] [2024-11-10 15:08:33,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541885063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:33,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337392416] [2024-11-10 15:08:33,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:08:33,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:33,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:33,209 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 15:08:33,213 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 15:08:33,573 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 15:08:33,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:08:33,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 15:08:33,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:08:33,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:08:33,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337392416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:33,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:33,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-10 15:08:33,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273524162] [2024-11-10 15:08:33,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:33,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 15:08:33,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:33,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 15:08:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2024-11-10 15:08:33,764 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 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 15:08:33,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:33,929 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2024-11-10 15:08:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:08:33,930 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 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 65 [2024-11-10 15:08:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:33,931 INFO L225 Difference]: With dead ends: 76 [2024-11-10 15:08:33,931 INFO L226 Difference]: Without dead ends: 76 [2024-11-10 15:08:33,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506 [2024-11-10 15:08:33,932 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:33,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 390 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-10 15:08:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-10 15:08:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 74 states have internal predecessors, (75), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2024-11-10 15:08:33,934 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 65 [2024-11-10 15:08:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:33,934 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2024-11-10 15:08:33,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 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 15:08:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2024-11-10 15:08:33,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-10 15:08:33,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:33,935 INFO L215 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 15:08:33,953 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 15:08:34,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:34,136 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:34,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1668543022, now seen corresponding path program 4 times [2024-11-10 15:08:34,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:34,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162348657] [2024-11-10 15:08:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:08:34,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:34,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162348657] [2024-11-10 15:08:34,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162348657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:34,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121415847] [2024-11-10 15:08:34,507 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 15:08:34,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:34,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:34,509 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 15:08:34,510 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 15:08:34,682 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 15:08:34,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:08:34,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 15:08:34,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:08:34,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:08:35,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121415847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:35,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:35,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-10 15:08:35,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839766371] [2024-11-10 15:08:35,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:35,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-10 15:08:35,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:35,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-10 15:08:35,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=898, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 15:08:35,177 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 15:08:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:37,875 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2024-11-10 15:08:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-10 15:08:37,876 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 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 71 [2024-11-10 15:08:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:37,876 INFO L225 Difference]: With dead ends: 88 [2024-11-10 15:08:37,876 INFO L226 Difference]: Without dead ends: 88 [2024-11-10 15:08:37,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=648, Invalid=1514, Unknown=0, NotChecked=0, Total=2162 [2024-11-10 15:08:37,877 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 13 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:37,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 585 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:08:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-10 15:08:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-10 15:08:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 86 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 15:08:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2024-11-10 15:08:37,882 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 71 [2024-11-10 15:08:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:37,882 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2024-11-10 15:08:37,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 15:08:37,882 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2024-11-10 15:08:37,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-10 15:08:37,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:37,885 INFO L215 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 15:08:37,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 15:08:38,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-10 15:08:38,086 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-10 15:08:38,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:38,086 INFO L85 PathProgramCache]: Analyzing trace with hash 579758958, now seen corresponding path program 5 times [2024-11-10 15:08:38,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:38,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961237245] [2024-11-10 15:08:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:38,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:08:39,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:39,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961237245] [2024-11-10 15:08:39,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961237245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:39,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813018580] [2024-11-10 15:08:39,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 15:08:39,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:39,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:39,061 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 15:08:39,062 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 15:08:39,891 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-10 15:08:39,891 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:08:39,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-10 15:08:39,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:08:40,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:08:41,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813018580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:41,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:41,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 72 [2024-11-10 15:08:41,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74339073] [2024-11-10 15:08:41,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:41,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-10 15:08:41,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:41,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-10 15:08:41,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1310, Invalid=3802, Unknown=0, NotChecked=0, Total=5112 [2024-11-10 15:08:41,819 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 72 states, 72 states have (on average 1.5138888888888888) internal successors, (109), 72 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)